Add controller and routes for groups

src/Routes/group.routes.ts

@@ -0,0 +1,12 @@
+import express from "express";
+import { getAllGroups, getAllGroupsWithParam, getGroup } from "../Controllers/group.controllers";
+import organisationRouter from "./organisation.routes";
+
+const router = express.Router();
+
+router.get("/", getAllGroups);
+router.get("/:pid", getGroup);
+
+organisationRouter.get("/:organisationPid/groups", getAllGroupsWithParam);
+
+export default router;