docs: introduce built-in plugins and examples #181

Job	Run time
e2e	1m 43s
unit-test / lint	1m 13s
unit-test / test (windows-latest, 22)	3m 42s
unit-test / test (windows-latest, 26)	3m 33s
unit-test / test (ubuntu-latest, 26)	1m 41s
unit-test / test (ubuntu-latest, 22)	1m 38s
unit-test / test (ubuntu-latest, 24)	1m 29s
unit-test / test (windows-latest, 24)	3m 44s
	18m 43s

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