Flake/devshell: Add more useful packages

The list now includes:
    - clang-tools: For clangd and clang-format
    - pre-commit: For the pre-commit hooks
    - prettier: For web-related formatting

shell.nix

@@ -15,13 +15,20 @@ pkgs.mkShell {
     }))
   ];
 
-  packages = with pkgs.qt6Packages; [
-    qtbase.dev
-    qttools
-    qtwayland.dev
+  packages =
+    with pkgs;
+    with pkgs.qt6Packages;
+    with pkgs.nodePackages;
+    [
+      qtbase.dev
+      qttools
+      qtwayland.dev
 
-    pkgs.ccache
-  ];
+      ccache
+      clang-tools
+      pre-commit
+      prettier
+    ];
 
   shellHook = ''
     # NOTE: This is required to make it find the wayland platform plugin installed