First implementation of Xamarin generation (jhipster#489)

* Xamarin front

* Small fix

* iOS improvements & JS lint

* More JS lint

* Improvements to Xamarin app

* Entity generation & Fixing back

* Entity generation

* Back fix & Entity generation

* Entity

* Fix linter error

* Fixing code smell

* Update (#2)

* Bump ini from 1.3.5 to 1.3.8 (jhipster#492)

Bumps [ini](https://github.com/isaacs/ini) from 1.3.5 to 1.3.8.
- [Release notes](https://github.com/isaacs/ini/releases)
- [Commits](npm/ini@v1.3.5...v1.3.8)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Change dto json/dto structure (jhipster#485)

* Change dto structure for use relation id rather than complete json structure

* [Blazor] Added dto support on Blazor (jhipster#493)

Added dto support on Blazor

* Added release-it package  (jhipster#494)

* Added release it package

* Fix npm spawn command on blazor client (jhipster#496)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: nicolas63 <nicolas_raymond@orange.fr>

* Revert "Update (#2)"

This reverts commit 99bbf12.

* Remove test folder

* Fixing npm & Small improvements

* Handle http certificates

* Update doc

* Update doc

* More doc update

* Update

* Remove unused model

* Revert change

* Real revert change

* Fixing issues

* Move Xamarin to debug only

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: nicolas63 <nicolas_raymond@orange.fr>

README.md

@@ -20,15 +20,15 @@ JHipster provides a blueprints system that allows to override the default behavi
 
 JHipster.NET is a blueprint that overrides the back-end part, originally generated in spring boot, by back-end in asp.net core. For the front-end all the common language can be used (angular, react). 
 
-In alpha version we have also the possibility to choose Blazor for the front. [Blazor as front issue](https://github.com/jhipster/jhipster-dotnetcore/issues/165)
+In alpha version we also have the possibility to choose either [Blazor](https://github.com/jhipster/jhipster-dotnetcore/issues/165) or [Xamarin](https://github.com/jhipster/jhipster-dotnetcore/issues/488) for the front.
 
-This blueprint it's an official blueprint of jhipster [official-blueprints](https://www.jhipster.tech/modules/official-blueprints/)
+This blueprint is an official blueprint of JHipster [official-blueprints](https://www.jhipster.tech/modules/official-blueprints/)
 
 # Docs
 
-Documentation and information about  `JHipster.NET ` is available [here](https://jhipsternet.readthedocs.io/en/latest/)
+Documentation and information about  `JHipster.NET` are available [here](https://jhipsternet.readthedocs.io/en/latest/)
 
-Full documentation and information about JHipster is available [here](https://www.jhipster.tech/) 
+Full documentation and information about JHipster are available [here](https://www.jhipster.tech/)
 
 # Analysis of the sample project 
 https://github.com/jhipster/jhipster-sample-app-dotnetcore

docs/Features/fronts.md

@@ -1,3 +1,70 @@
+# Fronts
+
+When generating an application, you are able to choose between multiple fronts. 
+![front-choice](../assets/Front-choice.png)
+
+## Angular
+
+Angular (commonly referred to as "Angular 2+" or "Angular v2 and above") is a TypeScript-based open-source web application framework.
+
+## React
+
+React (also known as React.js or ReactJS) is an open-source, front end, JavaScript library for building user interfaces or UI components.
+
+## Alpha - Blazor
+
+Blazor is a free and open-source web framework that enables developers to create web apps using C# and HTML.
+
+## Alpha - Xamarin
+
+With a C#-shared codebase, developers can use Xamarin tools to write native Android, iOS, and Windows apps with native user interfaces and share code across multiple platforms, including Windows, macOS, and Linux.
+
+### Available features
+
+- Handle registration and connection.
+- Sidebar menu to navigate through pages.
+- Entities and users management.
+- Auto-generated entity models, services, views and viewmodels.
+
+### NuGet requirements
+
+- [akavache](https://www.nuget.org/packages/akavache/) >= 7.1.1
+- [MvvmCross.Forms](https://www.nuget.org/packages/MvvmCross.Forms/) >= 7.1.1
+- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations/) >= 5.0.0
+- [System.Net.Http.Json](https://www.nuget.org/packages/System.Net.Http.Json/) >= 3.2.1
+- [Xamarin.Forms](https://www.nuget.org/packages/Xamarin.Forms) >= 4.6.0
+- [Xamarin.Essential](https://www.nuget.org/packages/Xamarin.Essentials/) >=1.5.3
+
+### Why Xamarin
+
+Xamarin allows to take advantage of this blueprint. Indeed, it enables to generate a modern cross platform application with both front-end and back-end in C#.
+
+### Structure
+
+Any generated Xamarin application is structured as follows
+```
+client
+├── Namespace.Client.Xamarin.Core     - Your core application
+│   ├── Models
+│   │   ├── Entities                  - Generated models
+│   ├── Services
+│   │   ├── Entities                  - Generated services
+│   ├── ViewModels
+│   │   ├── Entities                  - Generated viewmodels
+│   ├── Views
+│   │   ├── Entities                  - Generated views
+├── Namespace.Client.Xamarin.Android  - Your Android application
+│   ├── Resources          
+│   │   ├── drawable                  - Contains your images
+│   │   ├── Layout                    - Contains your layouts
+│   ├── Properties
+├── Namespace.Client.Xamarin.iOS      - Your iOS application   
+│   ├── Resources                     - Contains your images
+│   ├── Properties
+├── Namespace.Client.Xamarin.Shared   - Shared code
+│   ├── Constants                     - Contains shared constants
+```
+
 # Fronts 
 
 ## Using Blazor

docs/Introduction/big-picture.md

@@ -5,6 +5,6 @@ JHipster provides a blueprints system that allows to override the default behavi
 
 JHipster.NET is a blueprint that overrides the back-end part, originally generated in spring boot, by back-end in asp.net core. For the front-end all the common language can be used (angular, react). 
 
-In alpha version we have also the possibility to choose Blazor for the front. [Blazor as front issue](https://github.com/jhipster/jhipster-dotnetcore/issues/165)
+In alpha version we also have the possibility to choose either [Blazor](https://github.com/jhipster/jhipster-dotnetcore/issues/165) or [Xamarin](https://github.com/jhipster/jhipster-dotnetcore/issues/488) for the front.
 
-This blueprint it's an official blueprint of jhipster [official-blueprints](https://www.jhipster.tech/modules/official-blueprints/)
+This blueprint is an official blueprint of JHipster [official-blueprints](https://www.jhipster.tech/modules/official-blueprints/)