Language server didn't start for standalone files

[istudyatuni]

Rust-analyzer has support for standalone files: rust-lang/rust-analyzer#8955, it works in vs-code. There was an issue #61, but it was closed without any info

Error: failed to discover workspace

[rchl]

Apparently this requires extra code on our side that explicitly passes file paths to the server on initialization. Something like https://github.com/SomeoneToIgnore/rust-analyzer/blob/5c0369b1d0c5351672f2a16e9a0d17beee84bcbe/editors/code/src/client.ts#L53-L59

It means that newly opened files would probably not work so it's a bit weird approach...

EDIT: It looks like it's expected that server will be restarted on new individual files being opened.