feat: add cds-lsp

[stijnme]

Basic LSP config for @sap/cds-lsp

[nbys]

It might be due to my moderate experience with Neovim, but I struggled a bit to get this language server working. :LspInfo indicated that cds_lsp was not working for my CDS views files. I investigated the path, tried different versions of Node.js, and experimented with various configurations using lsp-config. However, the problem was much simpler: Neovim was not detecting the filetype cds.

You can check the filetype with :set ft?. If it works, it shows filetype=cds.

To fix this, I added these lines to my init.lua file. Now, cds_lsp is correctly attached:

vim.filetype.add({
    extension = {
        cds = "cds",
    },
})

[justinmk]

To fix this, I added these lines to my init.lua file. Now, cds_lsp is correctly attached:

vim.filetype.add({
    extension = {
        cds = "cds",
    },
})

Because nvim/vim doesn't have "cds" filetype detection by default.