Added very simple register backend and frontend

backend/src/app.py

@@ -132,6 +132,22 @@ def protected():
          -H "Authorization: Bearer <your_token>"
     """
     return {'message': f'protected endpoint (allowed user {flask_praetorian.current_user().username})'}
+
+@app.route('/api/register', methods=['POST']) 
+def register():
+    req = flask.request.get_json(force=True)
+    username = req.get('username', None)
+    password = req.get('password', None)
+    new_user = User(
+        username=username,
+        password=guard.hash_password(password)
+    )
+    db.session.add(new_user)
+    db.session.commit()
+    ret = {'message': 'Account erstellt für den Account {}'.format(
+        new_user.username
+    )}
+    return ret, 200
     
 @app.route('/time')
 def get_current_time():