add set user part in usermanagement

timeTrack.py

@@ -568,7 +568,17 @@ class TimeTrack:
         if userinput == 1:
             self.create_user()
         elif userinput == 2:
-            pass
+            users = self.get_users()
+            printtext = ['Wähle deinen User:']
+            count = 1
+            for user in users:
+                printtext.append('[{}] {}'.format(count, user[1]))
+                count += 1
+            
+            printtext.append('[0] abbrechen')
+            userid = self.userchoise(printtext, count)
+            self.USERID = users[userid - 1][0]
+            self.set_user()
         elif userinput == 3:
             pass