Add "!~" operator to test filter

[hgran]

Description

With this pull request I have implemented the !~ (Not Contains) filter functionality.

Related issue

This implements the enhancement requested in #1794
I have implemented tests corresponding to the tests that already exist for ~ (Contains) and I have also tested running tests using the filters:

Excluding by FQDN
/TestCaseFilter:FullyQualifiedName!~Aaa.bbb
Including by FQDN
/TestCaseFilter:FullyQualifiedName~Aaa.bbb

Excluding by test name
/TestCaseFilter:Name!~ccc
Including by test name
/TestCaseFilter:Name~ccc

The expected tests were run in all cases.

[msftclas]

All CLA requirements met.

[mayankbansal018]

@hgran , thanks for this change, LGTM. 👍 😄

[mayankbansal018]

fixed #1385