[mac] Adds rust devel. [nvim] Uses snacks for buffer picker

home-manager/features/neovim/config/lua/plugins/snacks.lua

@@ -0,0 +1,15 @@
+return {
+  "folke/snacks.nvim",
+  opts = {
+    keys = {
+      {
+        "<leader><space>",
+        function()
+          Snacks.picker.buffers()
+        end,
+        desc = "Open Files",
+      },
+      { "<leader><comma>", false },
+    },
+  },
+}