Improve `languageId` selection

[Guldoman]

[WIP]

The language config entry can now be either a string which will be used in every case, or an array.

In the array case, it's expected that each entry is a table with id and pattern properties. The id represents the languageId to be used in the case the pattern matches with the file path. Each entry is tested in order, and the first match is used. If no match is found, the extension is used as languageId.

TODO:

• [x] Check if some servers fail to work properly if we send the default language as languageId
• [ ] Set the language table for servers that need it
• [ ] Set the proper standard name for languages that have one
• [x] Add example in README

[PerilousBooklet]

Status

• [x] c with clangd
• [x] c++ with clangd
• [x] java with jdtls manual
• [x] python with pylsp
• [x] css with cssls
• [x] html with html
• [x] js with tsserver
• [x] ts with tsserver
• [x] json with jsonls
• [x] yaml with yamllls
• [x] lua with sumneko_lua
• [x] elixir with elixirls
• [x] xml with lemminx
• [x] scala with metals
• [x] clojure with clojure_lsp
• [x] odin with odinls
• [x] bash with bashls
• [x] go with gopls
• [x] haskell with hls
• [x] kotlin with kotlin_language_server
• [x] perl with perlnavigator
• [x] sql with sqlls
• [x] r with rlanguageserver
• [x] php with intelephense
• [x] rust with rust_analyzer
• [x] latex with texlab
• [x] toml with taplo
• [x] dart with dartls
• [x] zig with zls
• [x] typst with typst_lsp
• [x] erlang with erlang_ls (custom AUR package)
• [x] fortran with fortls

[PerilousBooklet]

The check means that the LSP server still works. And some of those "errors" are probably not related to this PR. I need to verify.

[Guldoman]

Yeah, you can remove the ones that are just the server using stderr as a logging output.

[Guldoman]

@PerilousBooklet could you test with the latest changes?

[PerilousBooklet]

Right away.