Tanstack Start SDK Improvements

[nicohrubec]

Tracking issue for potential future SDK improvements.

Tip: React with 👍 to help prioritize this (similarly for sub-issues of this). Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.

[linear-code]

JS-2332

[nicohrubec]

The most important features included here will be released this week, as part of this we will also promote the SDK to beta. Don't think this umbrella is needed anymore, so closing.