[7.x] Add snapshotsUrl to Cloud plugin public interface. (#110328)

[cjcenizal]

Backports the following commits to 7.x:

• Add snapshotsUrl to Cloud plugin public interface. (Add snapshotsUrl to Cloud plugin public interface. #110328)

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 7b01335
• Storybooks Preview

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
cloud	21	22	+1

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
cloud	9.3KB	9.4KB	+115.0B

Unknown metric groups

API count

id	before	after	diff
cloud	21	22	+1

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