Move pytest-testomatio plugin under testomat.io umbrella

[poliarush]

Unite side projects to :

• https://github.com/Ypurek/pytest-analyzer
• https://github.com/tikolakin/pytestomatio/

Naming:

• pytest-testomatio

Make official pytest-testomatio plugin under organization:

• https://github.com/testomatio/

Changes:

• make changes to testomat.io UI and testomat.io docs to suggest using plugin by official source
• add python demo project
• notify user base

[poliarush]

https://github.com/testomatio/reporter/discussions/252

[poliarush]

• [ ] add check-tests and execution instruction in testomat.io
• [ ] demo project