feat: implement auth, projects, and frontend foundation

apps/api/src/auth/cookies.py

@@ -0,0 +1,9 @@
+from src.config import Settings
+
+
+def build_cookie_options(settings: Settings) -> dict[str, str | bool]:
+    return {
+        "httponly": True,
+        "secure": settings.cookie_secure,
+        "samesite": settings.cookie_samesite,
+    }