feat: adding support for bitbucket cloud webhook secrets

[almightyfoon]

what

Added support for Bitbucket Cloud Webhook secrets. Bitbucket added support in the cloud offering in October of 2023 Announcement

• Ported the request validation libraries from bitbucket server to bitbucket cloud client.
• Removed error check and associated test to ensure they aren't being used because they weren't supported

why

There is an open request for this #3909 and I'm also in need of this feature.

tests

I ran make test, the logic is the same as bitbucketserver.

Test results:
? github.com/runatlantis/atlantis [no test files]
ok github.com/runatlantis/atlantis/cmd 0.113s
ok github.com/runatlantis/atlantis/server (cached)
ok github.com/runatlantis/atlantis/server/controllers (cached)
ok github.com/runatlantis/atlantis/server/controllers/events (cached)
ok github.com/runatlantis/atlantis/server/controllers/templates (cached)
ok github.com/runatlantis/atlantis/server/controllers/websocket (cached)
ok github.com/runatlantis/atlantis/server/core/config (cached)
ok github.com/runatlantis/atlantis/server/core/config/raw (cached)
ok github.com/runatlantis/atlantis/server/core/config/valid (cached)
ok github.com/runatlantis/atlantis/server/core/db (cached)
ok github.com/runatlantis/atlantis/server/core/locking (cached)
ok github.com/runatlantis/atlantis/server/core/redis (cached)
ok github.com/runatlantis/atlantis/server/core/runtime (cached)
ok github.com/runatlantis/atlantis/server/core/runtime/cache (cached)
ok github.com/runatlantis/atlantis/server/core/runtime/common (cached)
ok github.com/runatlantis/atlantis/server/core/runtime/models (cached)
ok github.com/runatlantis/atlantis/server/core/runtime/policy (cached)
ok github.com/runatlantis/atlantis/server/core/terraform (cached)
ok github.com/runatlantis/atlantis/server/events (cached)
ok github.com/runatlantis/atlantis/server/events/command (cached)
ok github.com/runatlantis/atlantis/server/events/models (cached)
ok github.com/runatlantis/atlantis/server/events/terraform/ansi (cached)
ok github.com/runatlantis/atlantis/server/events/vcs (cached)
ok github.com/runatlantis/atlantis/server/events/vcs/bitbucketcloud (cached)
ok github.com/runatlantis/atlantis/server/events/vcs/bitbucketserver (cached)
ok github.com/runatlantis/atlantis/server/events/vcs/common (cached)
ok github.com/runatlantis/atlantis/server/events/webhooks (cached)
ok github.com/runatlantis/atlantis/server/jobs (cached)
ok github.com/runatlantis/atlantis/server/logging (cached)
ok github.com/runatlantis/atlantis/server/metrics (cached)
ok github.com/runatlantis/atlantis/server/recovery (cached)
? github.com/runatlantis/atlantis/testdrive [no test files]
ok github.com/runatlantis/atlantis/server/scheduled (cached)
ok github.com/runatlantis/atlantis/server/utils (cached)

references

Closes #3909

[pavankumar-go]

kindly get this change merged. we are in very much need for this feature.

[X-Guardian]

@almightyfoon, can you resolve the conflicts on this PR?

[github-actions]

This issue is stale because it has been open for 1 month with no activity. Remove stale label or comment or this will be closed in 1 month.

[marwan38]

Gentle bump, would be nice to have this.

[jamengual]

Very little work needs to be done to get this merged, if anyone can pick it up and finish the changes we could get this merged.

[almightyfoon]

Sorry for the delay, real life got in the way. Working on clearing the failed tests.

[jamengual]

@almightyfoon do you have time to finish this? Thanks.