* Additions to the LSP module for `workspace/didChangeWatchedFiles`
We can then use this functionality to allow a `BuildSystem` to watch
files (e.g. via the client or even in-process file watching),
which would allow us to do things like detect new files and provide
accurate build settings for them.
* Improve #file and #line for LSP test errors
Also regenerate Linux main
* Add `LSPAnyCodable` protocol requirement to RegistrationOptions
* Don't encode an optional documentSelector to null
* Skip running `testSourcekitdCrashRecovery` when not on macOS
