Add necessary packages to flakes devshell

flake.nix

@@ -53,6 +53,13 @@
               rustfmt
               pre-commit
               rustPackages.clippy
+
+              gtk4
+              cairo
+              glib
+              pkg-config
+              poppler
+              wrapGAppsHook
             ];
             # Without inheriting nativeBuildinputs, cargo build will fail but that is good since we want to use only nix build
             # inherit nativeBuildInputs;