Initial repository clean up for Go rewrite

In order to start the Go project rewrite (1) from scratch the current
repository structure and files have been reset to a clean state to
remove all references to the previous implementations, documentations
and project structure/layout.

Starting from a "fresh" state allows to build the project up with the
correct structure and design pattern as if there were leftovers from
the previous repository data resulting in mixed files and folders.

This commit must be pushed first before all other blocked tickets can be
resolved that are also bound to the epic GH-33!
See the corresponding milestone (2) for more details about the
implementation/resolve order.

>>>> Tasks

- `.idea/` (3) - Deleted the whole folder, the files were scoped for
  "Pycharm Community Edition" and will be replaced with the correct
  files for "IntelliJ Ultimate Edition" with the official Go plugin (4)
  (Goland (5)) later on.
- `assets/` (6) - Deleted the whole folder, all assets will be
  redesigned and added again later on.
- `bin/` (7) - Deleted the whole folder, the script was part of the
  Python implementation and represented the entry point of the app.
- `snowsaw/` (8) - Deleted the whole folder, included the main Python
  app and API implementations.
- `.editorconfig` (9) - Deleted the file, it will be recreated in GH-38
  to match the new project layout and latest "Arctic Ice Studio" project
  design standards/guidelines.
- `.gitignore` (10) - Deleted the file, it will be recreated in GH-35 to
  match the new project layout and latest "Arctic Ice Studio" project
  design standards/guidelines.
- `CHANGELOG.md` (11) - Deleted the file, it will be recreated later on to
  match the new project layout and latest "Arctic Ice Studio" project
  design standards/guidelines.
- `README.md` (12) - Deleted the file, it will be recreated later on to
  match the new project layout and latest "Arctic Ice Studio" project
  design standards/guidelines including the new project assets
  (logo, repository hero etc.).

References:
  (1) #33
  (2) https://github.com/arcticicestudio/snowsaw/milestone/5
  (3) https://github.com/arcticicestudio/snowsaw/tree/bc54e5136be27f8037de5bbc2f046f37eb036274/.idea
  (4) https://plugins.jetbrains.com/plugin/9568-go
  (5) https://www.jetbrains.com/go
  (6) https://github.com/arcticicestudio/snowsaw/tree/bc54e5136be27f8037de5bbc2f046f37eb036274/assets
  (7) https://github.com/arcticicestudio/snowsaw/tree/bc54e5136be27f8037de5bbc2f046f37eb036274/bin
  (8) https://github.com/arcticicestudio/snowsaw/tree/bc54e5136be27f8037de5bbc2f046f37eb036274/snowsaw
  (9) https://github.com/arcticicestudio/snowsaw/blob/bc54e5136be27f8037de5bbc2f046f37eb036274/.editorconfig
  (10) https://github.com/arcticicestudio/snowsaw/blob/bc54e5136be27f8037de5bbc2f046f37eb036274/.gitignore
  (11) https://github.com/arcticicestudio/snowsaw/blob/bc54e5136be27f8037de5bbc2f046f37eb036274/CHANGELOG.md
  (12) https://github.com/arcticicestudio/snowsaw/blob/bc54e5136be27f8037de5bbc2f046f37eb036274/README.md

Epic: GH-33
Blocked GH-34 GH-35 GH-36 GH-37 GH-38 GH-39 GH-42 GH-43 GH-44 GH-45
        GH-46 GH-47 GH-48
Resolves GH-49