(5.1.a.3) As DEVELOPERS we want to REFACTOR THE GetCheeps() TO EXECUTE AN SQL QUERY such that it NO LONGERS DOES THE OLD THING

[Thyme-Cat]

Acceptance criteria:

• Modify the code in the method GetCheeps() in CheepService.cs so that it executes an SQL query against the SQLite database.
• The signature of the method should remain the same, i.e., return type remains List<CheepViewModel> and it consumes no input.