Support .sbt files in vscode ide / language server

[fahrradflucht]

Currently when opening build.sbt or .sbt files in project vscode gives squiggly red lines all over the place since it detects the file as scala but doesn't now how to handle it (the lsp doesn't find a configuration).

I'm not sure if it is feasible to generate a configuration for those files with the current language servers capabilities since they also have some differences to normal files in that they neither contain object nor class definitions.

In the mean time it would maybe be a first step to just discard language server errors in .sbt files.

Edit:
I just saw that 2ce96ae does what I proposed as an intermediary fix. - @smarter would you mind releasing this? It doesn't look like vscode-dotty follows a particular release schedule.

[Blaisorblade]

Relates to #4542. I think vscode-dotty is released with Dotty, and I expect that this was fixed in 0.9.0-RC1. Don't know about any better plans for actual support yet.

[fahrradflucht]

Is vscode-dotty released with dotty? The last version commit was on the 19th of april and dotty was released on the 12th of june. Or do I miss something here?

[smarter]

Looks like we forgot to do a release after this commit.

[smarter]

PR to upgrade dependencies and make a release: #4828

[allanrenucci]

.sbt files won't be supported by the Dotty language server. Future releases of VSCode plugin ignore them