Support diesel in flake

Add diesel-cli to dev environment
Add postgresql, include rust in package build dependencies

flake.nix

@@ -77,11 +77,13 @@
         };
 
         build-pkgs = with pkgs; [
+          rust
           dioxus-cli
           wasm-bindgen-cli_0_2_123
           binaryen
           lld
           tailwindcss_4
+          postgresql
         ];
       in
       rec {
@@ -90,7 +92,7 @@
           DAISYUI_THEME_PATH = "${daisyui-theme}";
 
           buildInputs = with pkgs; [
-            rust
+            diesel-cli
           ] ++ build-pkgs;
         };