[pgadmin4][Patch]: Support for create multiple test classes in one test file

Hi Hackers,

Attached is the patch to create multiple test classes in one test file.

For example: I have one test file *test_feature.py *where I wrote multiple
test classes
class TestX(BaseTestGenerator):
class TestY(BaseTestGenerator):
class TestZ(BaseTestGenerator):

So with current implementation it will run the test cases for *TestZ* class.

--
*Akshay Joshi*

*Sr. Software Architect *

*Phone: +91 20-3058-9517Mobile: +91 976-788-8246*