Added a workflow to parallelise the E2E tests #7

Job	Run time
discover-tests	4s
e2e-tests (tests/e2e/test_complex_types.py, sea)	38s
e2e-tests (tests/e2e/test_concurrent_telemetry.py, thrift)	59s
e2e-tests (tests/e2e/test_complex_types.py, thrift)	48s
e2e-tests (tests/e2e/test_concurrent_telemetry.py, sea)	39s
e2e-tests (tests/e2e/test_parameterized_queries.py, thrift)	3m 5s
e2e-tests (tests/e2e/test_parameterized_queries.py, sea)	37s
e2e-tests (tests/e2e/test_variant_types.py, sea)	34s
e2e-tests (tests/e2e/test_variant_types.py, thrift)	58s
merge-coverage	3m 8s
	11m 30s

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