fix: get api host from middleware url

[dawid-ziobro]

Description

Base url for middleware is no longer computed and is not based on headers anymore.
Now middlewareUrl is used instead and this config option is now required.
Configuration in nuxt.config.js has to be extended.

Related Issue

CT-208

Motivation and Context

Headers can be overridden which can lead to security issues.

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Changelog

• I have updated the Changelog (V1) v2 and mentioned all breaking changes in the public API.
• I have documented all new public APIs and made changes to existing docs mentioning the parts I've changed so they're up to date.

Tests

• I have written test cases for my code
• I have tested my Pull Request on production build and (to my knowledge) it works without any issues
• I have added tests to cover my changes.
• All new and existing tests passed.

Code standards

• My code follows the code style of this project.

• I have followed naming conventions

Docs

• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[github-actions]

💙 vsf-next-demo successfully deployed at

[lsliwaradioluz]

Should we also update this part of the VSF docs about separating server-middleware?

[dawid-ziobro]

@lsliwaradioluz i don't think so, nothing changes for this case.