SentryCheckIn annotation and advice config for Spring

[adinauer]

📜 Description

The @SentryCheckIn annotation can be put on methods in Spring applications, sending check-ins for that method.
This can for example be combined with @Scheduled methods.

💡 Motivation and Context

Support for @Scheduled in Spring

💚 How did you test it?

manually

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

[github-actions]

	Fails
🚫	Please consider adding a changelog entry for the next release.

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Instructions and example for changelog

Please add an entry to CHANGELOG.md to the "Unreleased" section. Make sure the entry includes this PR's number.

Example:

## Unreleased

- SentryCheckIn annotation and advice config for Spring ([#2946](https://github.com/getsentry/sentry-java/pull/2946))

If none of the above apply, you can opt out of this check by adding #skip-changelog to the PR description.

Generated by 🚫 dangerJS against 8179966

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	448.02 ms	528.94 ms	80.92 ms
Size	1.72 MiB	2.29 MiB	575.99 KiB

Baseline results on branch: feat/crons-lib-support

Startup times

Revision	Plain	With Sentry	Diff
5894625	378.40 ms	424.38 ms	45.98 ms

App size

Revision	Plain	With Sentry	Diff
5894625	1.72 MiB	2.29 MiB	575.99 KiB

Previous results on branch: feat/crons-spring-scheduled

Startup times

Revision	Plain	With Sentry	Diff
c11b373	274.50 ms	309.04 ms	34.54 ms
a59fe55	351.31 ms	451.24 ms	99.93 ms
24b1f58	394.88 ms	467.82 ms	72.94 ms

App size

Revision	Plain	With Sentry	Diff
c11b373	1.72 MiB	2.29 MiB	575.99 KiB
a59fe55	1.72 MiB	2.29 MiB	576.09 KiB
24b1f58	1.72 MiB	2.29 MiB	575.99 KiB

[codecov]

Codecov Report

All modified lines are covered by tests ✅

📢 Thoughts on this report? Let us know!.

[lbloder]

Maybe we could add a test similar to the SentryTransactionAdviceTest.

added comments regarding the scope of the annotation

[lbloder]

Left some wording suggestions.

Otherwise LGTM 👍