feat: Add whats new for one click log forwarding java app

[sorayamajdolashrafi]

This pr adds a what’s new post for 1-Click Log Forwarding for Java Applications.
The new feature is rolling out on 01/28, and this what’s new post is ready to go live.

[github-actions]

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[mchavez-newrelic]

Hello! this is actually not ready to be released yet, apologies for the noise. We'll reach out once this is confirmed to be ready. thank you!

[sujitnewrelic]

Not merging it as per https://newrelic.slack.com/archives/C0DSGL3FZ/p1738004316193319

[sorayamajdolashrafi]

this is now ready to be released, thank you so much!

[WriteMayur]

looks good