feat(neovim): Rust dev with rustaceanvim & LSP servers installation through OS installer and NOT mason

- Use `rustaceanvim` for Rust development
- `rustaceanvim` keymaps in NeoVim `after` file
- Remove Rust LSP setup through builtin LSP
- Remove LSP installations from Mason when equivalent available through
  OS installers
- All LSP plugins in `code-lsp.lua`

common/.config/nvim/after/ftplugin/rust.lua

@@ -0,0 +1,23 @@
+-- TODO: Map all native Nvim 0.11 LSP commands to corresponding rustaceanvim ones
+-- grn -> Rename
+-- grr -> References
+-- gri -> Implementation
+-- gO -> document_symbol
+-- gra -> code_action
+-- Mine
+-- F2 -> Rename
+-- gD -> Go to definition
+-- <leader>cr -> References
+-- <leader>co -> document_symbol
+
+if pcall(require, "rustaceanvim") then
+    local bufnr = vim.api.nvim_get_current_buf()
+
+    vim.keymap.set("n", "<C-.>", function()
+        vim.cmd.RustLsp("codeAction")
+    end, { silent = true, buffer = bufnr })
+
+    vim.keymap.set("n", "K", function()
+        vim.cmd.RustLsp({ "hover", "actions" })
+    end, { silent = true, buffer = bufnr })
+end