API-37: Adding endpoints for climbing route rating app (!16)

Co-authored-by: Patrick Mueller <patrick@mueller-patrick.tech>
Reviewed-on: #16
Co-authored-by: Patrick Müller <patrick@plutodev.de>
Co-committed-by: Patrick Müller <patrick@plutodev.de>

app.ts

@@ -9,6 +9,7 @@ import logger from './src/middleware/logger';
 import {dhbwRaPlaChangesRouter} from './src/models/dhbw-rapla-changes/DHBWRaPlaChanges.router';
 import {raPlaMiddlewareRouter} from './src/models/rapla-middleware/RaPlaMiddleware.router';
 import {betterzonRouter} from './src/models/betterzon/Betterzon.router';
+import {crrRouter} from './src/models/climbing-route-rating/ClimbingRouteRating.router';
 
 let cors = require('cors');
 
@@ -37,6 +38,7 @@ app.use('/partyplaner', partyPlanerRouter);
 app.use('/raplachanges', dhbwRaPlaChangesRouter);
 app.use('/rapla-middleware', raPlaMiddlewareRouter);
 app.use('/betterzon', betterzonRouter);
+app.use('/crr', crrRouter);
 
 // this is a simple route to make sure everything is working properly
 app.get('/', (req: express.Request, res: express.Response) => {