Add rust DAP debugging setup to nvim

Wires up nvim-dap, nvim-dap-ui and rustaceanvim, enables the
NvChad blink completion lazyspec, activates the treesitter
ensure_installed list and adds DAP/rustaceanvim keymaps.

config/nvim/lua/plugins/init.lua

@@ -13,16 +13,71 @@ return {
     end,
   },
 
-  -- test new blink
-  -- { import = "nvchad.blink.lazyspec" },
+  {
+    'mrcjkb/rustaceanvim',
+    -- To avoid being surprised by breaking changes,
+    -- I recommend you set a version range
+    version = '^9',
+    -- This plugin implements proper lazy-loading (see :h lua-plugin-lazy).
+    -- No need for lazy.nvim to lazy-load it.
+    lazy = false,
+    config = function()
+      local mason_registry = require('mason-registry')
+      local codelldb = mason_registry.get_package('codelldb')
+      local extension_path = codelldb:get_install_path() .. "/extension/"
+      local codelldb_path = extension_path .. "adapter/codelldb"
+      local liblldb_ext = vim.uv.os_uname().sysname == "Darwin" and "dylib" or "so"
+      local liblldb_path = extension_path .. "lldb/lib/liblldb." .. liblldb_ext
+      local cfg = require('rustaceanvim.config')
 
-  -- {
-  -- 	"nvim-treesitter/nvim-treesitter",
-  -- 	opts = {
-  -- 		ensure_installed = {
-  -- 			"vim", "lua", "vimdoc",
-  --      "html", "css"
-  -- 		},
-  -- 	},
-  -- },
+      vim.g.rustaceanvim = {
+        dap = {
+          adapter = cfg.get_codelldb_adapter(codelldb_path, liblldb_path),
+        },
+      }
+    end
+  },
+
+  { 
+    'mfussenegger/nvim-dap', 
+    config = function()
+      local dap, dapui = require('dap'), require('dapui') 
+      
+      dap.listeners.before.attach.dapui_config = function()
+        dapui.open()
+      end
+      
+      dap.listeners.before.launch.dapui_config = function()
+        dapui.open()
+      end
+
+      dap.listeners.before.event_terminated.dapui_config = function()
+        dapui.close()
+      end
+
+      dap.listeners.before.event_exited.dapui_config = function()
+        dapui.close()
+      end
+    end
+  },
+
+  {
+    'rcarriga/nvim-dap-ui',
+    dependencies = { 'mfussenegger/nvim-dap', 'nvim-neotest/nvim-nio' },
+    config = function()
+      require('dapui').setup()
+    end,
+  },
+
+  { import = "nvchad.blink.lazyspec" },
+
+  {
+  	"nvim-treesitter/nvim-treesitter",
+  	opts = {
+  		ensure_installed = {
+  			"vim", "lua", "vimdoc",
+       "html", "css"
+  		},
+  	},
+  },
 }