feat(neovim-rust): Rust LSP, debugging, testing and keymaps

- `rustaceanvim` for LSP config
- Rust ft specific keymaps in `after/ftplugin`
- `nvim-dap` for Rust debugging with codelldb
- `rustaceanvim.neotest` for Rust testing
- `rcasia/neotest-bash` for Bash testing
- Better keymaps for running tests
- Inlay hint UI improvements

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

@@ -1,23 +1,10 @@
--- 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 })
+    vim.keymap.set("n", "gC", "<cmd>RustLsp openCargo<cr>", { desc = "Open Cargo.toml", buffer = bufnr })
+    vim.keymap.set("n", "<leader>rm", "<cmd>RustLsp expandMacro<cr>", { desc = "Expand Macro", buffer = bufnr })
+    vim.keymap.set("n", "<leader>rp", "<cmd>RustLsp parentModule<cr>", { desc = "Parent Module", buffer = bufnr })
+    vim.keymap.set("n", "<leader>rJ", "<cmd>RustLsp joinLines<cr>", { desc = "Join Lines", buffer = bufnr })
+    vim.keymap.set("n", "<leader>rh", "<cmd>RustLsp openDocs<cr>", { desc = "Open docs.rs Documentation" })
+    vim.keymap.set("n", "<leader>rM", "<cmd>RustLsp view mir<cr>", { desc = "View Mid-Level IR", buffer = bufnr })
+    vim.keymap.set("n", "<leader>rH", "<cmd>RustLsp view hir<cr>", { desc = "View High-Level IR", buffer = bufnr })
 end