GitLab

- Specify maven-site-plugin version in module not-alone-serevr to avoid execution errors
- Add a Game interface and a proxy to not-alone-player
- Correct TS compilation option to correctly generate JS code
- Add a Main class to not-alone-player
- Add a Player interface and a proxy to not-alone-server

- Add .vscode dir to ignore file
- Remove code generation from not-alone-web (not needed anymore)

- This changes should clarify their usage, Client/Server was a bad choice.
- Rename Java classes accordinly.

- Module 'not-alone-web' is now reserved to Angular-related code
- This separation should help dealing with npm dependencies

Merge branch 'master' of gitlab.univ-nantes.fr:naomod/ooad/projet-2020