feat(linting): Add support for linting decK files #2066

Job	Run time
integration (kong:1.4.3)	1m 54s
integration (kong:1.5.1)	1m 35s
integration (kong:2.0.5)	1m 46s
integration (kong:2.1.4)	1m 51s
integration (kong:2.2.2)	1m 50s
integration (kong:2.3.3)	1m 52s
integration (kong:2.4.1)	1m 40s
integration (kong:2.5.1)	1m 52s
integration (kong:2.6.0)	1m 45s
integration (kong:2.7)	2m 19s
integration (kong:2.8)	1m 39s
integration (kong:3.0)	1m 50s
integration (kong:3.1)	1m 51s
integration (kong:3.2)	1m 50s
integration (kong:3.3)	1m 50s
integration (kong/kong:master-alpine)	1m 49s
	29m 13s

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