fix(cli, config, environment): do not allow --watch in CI environment

[mrazauskas]

The watch mode cannot be enabled in a continuous integration environment.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.03% (target: -1.00%)	❌ 93.48% (target: 95.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (ac8c6ac)	5667	5318	93.84%
Head commit (3b08932)	5692 (+25)	5343 (+25)	93.87% (+0.03%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#173)	46	43	93.48%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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_{You may notice some variations in coverage metrics with the latest Coverage engine update. For more details, visit the documentation}