Rename UtTestCase #519

Description

We have UtTestCase class consisting of several UtExecutions. It encapsulates all tests scenarios related to single method test generation. It is confusing because usually "test case" means one test scenario, not many.

The suggestion is to rename UtTestCase into something more clear.
Options:

• UtMethodTestSet
• UtTestCases
• UtMethodTestSuite

Context

UtTestCase is our API class representing generated test scenarios for one method under analysis.