* Remove and request historical shards at the startup
* Shard history requesting only at the first consensus round
* Removed test log
* Skip max shard seq no file in removing loop
* Updated the code comments
* Persisting condition changed
* Fixed code comment typos
* Fixed code comment typos
* Resolved PR comments
* Halt consensus until completing only the latest shard sync
* Added meaningful comments
* Resolved PR comments and updated hpfs binary
* Logic enhancement and cleanup
* Cleanup the code comment
* Adding full history mode and max shard configs for primary and blob shards.
* Commenting validation checks for hpfs responses until bug is fixed.
* Comment update.
- The ledgers are stored in a sqlite database in ledger file system.
- Ledgers are organized in shards inside primary folder.
- Raw inputs are saved as shards inside blob folder. No input files are created if neither inputs nor outputs are available.
- Both last primary shard hash and last blob shard hashes are subjected to consensus and necessary sync operations are performed if out of sync.
- Hpfs sync support setting single sync targets from both ends of the list. (Targets set from front are prioritized).
- Contract and ledger syncs and serving are performed independently.
