BE - #6 create test for team controller and endpoint /api/teams/findAll

[JagodaBodnar]

• [ ] set up tests for team controller
• [ ] create test for endpoint api/teams/findAll
• [ ] create controller requestMapping("api/teams") and and get mapping ("/findAll") where you will return list of all teams based on location and category @RequestParam(required = false) String location, @RequestParam(required = false) String category