Read build tool info from sentry-debug-meta.properties and attach it to events

[lcian]

📜 Description

Reads the build tool and its version from sentry-debug-meta.properties and sends it as part of the packages.

The build tool is being written to sentry-debug-meta.properties by the plugin (io.sentry.build-tool set to resp. maven and gradle).
The plugins don't currently set io.sentry.build-tool-version, so if it's not there we fall back to reporting "unknown" as the version.
In a future release of the plugin we can make it so they both write io.sentry.build-tool-version as well.

💡 Motivation and Context

Closes #4142

💚 How did you test it?

Unit tests

📝 Checklist

• 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.
• I updated the wizard 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

Change both of the plugins to report io.sentry.build-tool-version.

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	403.65 ms	454.30 ms	50.65 ms
Size	1.58 MiB	2.09 MiB	519.06 KiB

Previous results on branch: lcian/feat/report-build-tool

Startup times

Revision	Plain	With Sentry	Diff
465de40	413.00 ms	467.52 ms	54.52 ms

App size

Revision	Plain	With Sentry	Diff
465de40	1.58 MiB	2.09 MiB	518.93 KiB

[adinauer]

Mostly LGTM but seems not to be used yet.