[8.x] [HTTP/OAS] Ability to exclude routes from introspection (#192675)

[kibanamachine]

Backport

This will backport the following commits from main to 8.x:

• [HTTP/OAS] Ability to exclude routes from introspection (#192675)

Questions ?

Please refer to the Backport tool documentation

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: d849e63

Metrics [docs]

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
@kbn/router-to-openapispec	5	10	+5

Unknown metric groups

API count

id	before	after	diff
@kbn/core-http-server	530	531	+1
@kbn/router-to-openapispec	5	10	+5
total			+6

cc @jloleysens