✨ add justfile (#55)

* ✨ add justfile

* ✨ add fastapi server for tests

Author: vahidtwo

justfile

@@ -0,0 +1,21 @@
+# Justfile
+
+default:
+    help
+
+# Help task to display available tasks
+help:
+    @echo "Available tasks:"
+    @echo "  test       - Run tests using pytest."
+    @echo "  precommit  - Run pre-commit checks."
+
+# Task to run tests using pytest
+test:
+    python test/shared/_fastapi.py & P1=$! & sleep 3
+
+    python -m pytest & P2=$!
+    wait $P1 $P2
+
+# Task to run pre-commit checks
+precommit:
+    pre-commit run --all-files