Watcher for the workspace debug config file

[tomlin7]

Feature

When the workspace debug config files ({workspace}/.biscuit/launch.toml) are added/removed/modified, editor GUI is not updated. So, implement a file watcher that will watch the .biscuit directory within opened directory for changes.

• update debugger config GUI when config files are edited

• update debugger config GUI when config files are removed/added

• handle case where .biscuit/ don't exist

• use watchdog to implement the watcher, file observer, use pattern matching

• implement the watcher within src/biscuit/debugger, access configloader within same directory

• Examples of watcher implementations in biscuit:

  • active directory tree watcher
  • extensions directory watcher