docs: introduce built-in plugins and examples #184

Job	Run time
e2e	1m 33s
unit-test / lint	1m 21s
unit-test / test (windows-latest, 22)	3m 44s
unit-test / test (windows-latest, 26)	3m 24s
unit-test / test (ubuntu-latest, 24)	1m 22s
unit-test / test (ubuntu-latest, 22)	1m 36s
unit-test / test (ubuntu-latest, 26)	1m 26s
unit-test / test (windows-latest, 24)	3m 21s
	17m 47s

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