Add support for directives on directive definitions #3536

Job	Run time
Diff content of NPM package	45s
Security check of added dependencies	7s
ci / Run integration tests	1m 18s
ci / Check for commonly ignored files	4s
ci / Run fuzzing tests	1m 24s
ci / Check health of package-lock.json file	17s
ci / Lint source files	58s
ci / Run CodeQL security scan	1m 21s
ci / Measure test coverage	37s
ci / Run tests on Node v12	17s
ci / Run tests on Node v16	23s
ci / Run tests on Node v17	23s
ci / Run tests on Node v14	13s
ci / Build 'npmDist' artifact	27s
ci / Build 'denoDist' artifact	21s
	8m 55s

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