ci: add api doc generation #1157

Job	Run time
Detect which file has changed	4s
prepare-environment / prepare	3s
yaml-lint	8s
markdown-lint	7s
action-lint	6s
python-lint	9s
integration-tests-latest-infrahub	8s
check-api-documentation-obsolescence	17s
validate-generated-documentation	19s
unit-tests (3.12)	26s
unit-tests (3.9)	21s
unit-tests (3.13)	18s
unit-tests (3.10)	21s
validate-documentation-style	7s
documentation	51s
unit-tests (3.11)	19s
	4m 4s

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