Add justfile

Co-authored-by: Copilot <copilot@github.com>

justfile

@@ -0,0 +1,22 @@
+set shell := ["bash", "-eu", "-o", "pipefail", "-c"]
+
+default:
+	@just --list
+
+install:
+    npm install
+
+dev:
+    npm run dev
+
+build:
+    npm run build
+
+start:
+    npm run start
+
+lint:
+    npm run lint
+
+deploy:
+    bash scripts/deploy.sh