feat: allow opt-out version checking by environment variable

[ahnpnl]

Summary

• Allow opt-out version checking warning message via environment variable TS_JEST_DISABLE_VER_CHECKER

• Adjust documentation

Close #1774

Test plan

Added unit test and e2e test. Green CI

Does this PR introduce a breaking change?

• Yes
• No

Other information

N.A.

[coveralls]

Pull Request Test Coverage Report for Build 5409

• 12 of 12 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 92.737%

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Totals
Change from base Build 5408:	0.02%
Covered Lines:	1058
Relevant Lines:	1093

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💛 - Coveralls

[fubhy]

Hi @ahnpnl, thanks for merging this. Would you mind tagging a release with this included or do you know when you are going to tag the next release?

[ahnpnl]

hi @fubhy ya ts-jest can have release today :)