feat: add more tooling to devshell

Adds useful tools and environment variables to improve the rust development experience within the nix environment. This includes tools like git, gh, nodejs, cargo-watch, cargo-edit, clippy, and rustfmt.

It also configures a shell hook to provide information and sets RUST_BACKTRACE to 1 for easier debugging.

flake.nix

@@ -46,7 +46,21 @@
             rustToolchain
             rust-analyzer
             nixpkgs-fmt
+            git
+            gh
+            nodejs
+            cargo-watch
+            cargo-edit
+            clippy 
+            rustfmt
           ];
+
+          # Environment variables that help with development
+          shellHook = ''
+            echo "🦀 Rust development environment loaded"
+            echo "📝 rust-analyzer tools available"
+            export RUST_BACKTRACE=1
+          '';
         };
       });