feat: reuse browser with the jest-runner

[mxschmitt]

Very very early integration. Probably I can implement it without touching the environment at all.

The closing of the browser instances needs to be implemented somehow. Will continue soon.

Fixes #133

[github-actions]

Pull Request Test Coverage Report for Build 135837208

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 95.238%

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Totals
Change from base Build 135799437:	0.0%
Covered Lines:	71
Relevant Lines:	72

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💛 - Coveralls

[mxschmitt]

Probably some refactoring is needed, but something like this would work in my mind.

[mxschmitt]

I'll try to adjust it, so that there is no change in the environment required. should also be possible.
cc @mmarkelov

[mxschmitt]

I'll try to adjust it, so that there is no change in the environment required. should also be possible.
cc @mmarkelov

Probably not possible since we only get the wsEndpoint from the config. Now we also get it from the config by passing it from the runner over to the environment. I think we can merge this and your changes to make a beta release.