ci: add mega-linter for linting #2635

Job	Run time
macos-12 with pre-built binary (release)	3m 2s
macos-14 (release)	4m 33s
macos-14 with pre-built binary (release)	2m 4s
windows-latest (devel)	36m 49s
windows-latest with pre-built binary (oldrel-1)	6m 6s
windows-latest (release)	37m 41s
windows-latest with pre-built binary (release)	4m 19s
ubuntu-latest (devel)	22m 55s
ubuntu-latest (release)	14m 39s
windows-latest with pre-built binary (devel)	3m 58s
ubuntu-latest (oldrel-1)	14m 45s
ubuntu-latest with pre-built binary (oldrel-1)	2m 31s
macos-14 (release) full-features	12m 20s
ubuntu-latest with pre-built binary (release)	2m 5s
windows-latest (release) full-features	35m 44s
ubuntu-latest with pre-built binary (devel)	10m 18s
ubuntu-latest (release) full-features	5m 22s
	3h 39m 11s

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