Update shell

shell.nix

@@ -1,6 +1,13 @@
 { pkgs ? import <nixpkgs> { } }:
 
 pkgs.mkShell {
-  buildInputs =
-    [ pkgs.cargo pkgs.rustc pkgs.webkitgtk pkgs.pkg-config pkgs.kdialog ];
+  buildInputs = with pkgs; [
+    cargo
+    rustc
+    rust-analyzer
+    pkg-config
+    libsForQt5.kdialog
+    libadwaita
+    gtk4
+  ];
 }