Tracking Issue: Full Fast Sync Support

[liuchengxu]

The fast sync feature in Subcoin has been demonstrated to work, but it is not yet fully functional for practical use. Specifically, syncing to the latest Bitcoin state via fast sync is currently infeasible due to certain limitations within the Substrate framework. This issue tracks the progress toward a fully operational fast sync feature that is user-friendly and capable of syncing to the tip of the Bitcoin network.

Key Obstacles

• Using warp sync on parachain triggers OOM paritytech/polkadot-sdk#5053

Enhancements (Nice to have)

• Why request block body for fast sync? paritytech/polkadot-sdk#5406 (Patches have already been included in our polkadot-sdk fork)
• Compress the state response to reduce the state sync data transfer paritytech/polkadot-sdk#5312 (Patches have already been included in our polkadot-sdk fork)
• Persistent State Storage for Improved State Syncing paritytech/polkadot-sdk#4
• Improve the state sync progress report paritytech/polkadot-sdk#5397