Support VCS from project generator

[robojumper]

The project generator should:

• Create a .gitignore file containing

  • the Script/ folder (contains successfully compiled scripts, output files)
  • the ModShaderCache (contains processed shaders, output files)
  • the .code-workspace file (contains machine-dependent absolute paths to SDK)

• There should be additional tasks to

  • (XCom-SDK-GenerateWorkspace) Create a .code-workspace file locally with the correct paths
  • (XCom-SDK-UpdateContent) Update the local Content folder with up-to-date contents (perhaps as part of other tasks too)

• There should be a way to install a git pre-commit hook that automatically invokes XCom-SDK-UpdateContent in order to avoid forgetting to commit changes to .upks