Need E2E testing strategy for LSP

[joshuadavidthomas]

[joshuadavidthomas]

I wonder if the E2E tests could just be written in Python? Would certainly lower the cognitive overload, as I don't even know where to begin if that was on the Rust side. Whereas, if in Python I could use pytest which I am super familiar with (on top of there seem to be some LSP specific pytest plugins built by the same team as pygls that we could use).

I don't think it necessarily has to be in Rust anyway, since these are going to be E2E and just testing from the outside..

https://github.com/swyddfa/lsp-devtools