WDIO adapter (mocha) & HTML (pipe) updates: should create and return client session + HTML should work with WDIO

[mykhailiukVitalii]

Describe the bug Based on the previously found problem in html.js(pipe) code I created this ticket.

// TODO: this.tests=[] in case of Mocha, need retest by Vitalii
tests: this.tests

In this ticket you need to do the following:

1. Update the VDIO adapter so that it starts without the start-test command
2. add the ability to generate an HTML report to the start-test mode without launching the client
3. Review running tests in start-test mode
4. Add the creation of a folder for HTML to the BuildReport function
5. TBD with team...

[poliarush]

linked to https://github.com/testomatio/testomatio/issues/530

[DavertMik]

@AZANIR try to run wdio tests with HTML pipe enabled