docs: add API reference publishing with DocFX #78

Job	Run time
build (Debug)	24s
build (Release)	27s
examples:governance / RedisQueries	22s
docs	29s
dependency health	35s
test:governance-redis	26s
examples:core / IamRoles	30s
test:core	16s
examples:core / FeatureFlags	23s
examples:governance / VersionedResolution	20s
examples:governance / ApprovalWorkflow	22s
examples:core / BillingQuotas	23s
examples:governance / Queries	24s
examples:governance / DecisionTaxonomy	29s
examples:governance / RequestLifecycle	31s
examples:core / WorkflowApprovals	22s
examples:governance / GovernedExecution	29s
test:governance	23s
validation summary	4s
	7m 39s

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