feat(rpc): introduce taiko_setBatchToLastBlock and taiko_lastL1OriginByBatchID RPC methods for Shasta protocol

[davidtaikocha]

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[Copilot]

Pull Request Overview

This PR introduces two new RPC methods for the Shasta protocol: taiko_setBatchToLastBlock for setting batch-to-block mappings and taiko_lastL1OriginByBatchID for retrieving L1 origins by batch ID. The implementation also includes code formatting improvements for better readability.

• Adds a new database table BatchToLastBlock to store batch ID to last block number mappings
• Implements taiko_setBatchToLastBlock method for storing batch-to-block relationships
• Implements taiko_lastL1OriginByBatchID method for querying L1 origins by batch ID

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/db/model.rs	Adds new BatchToLastBlock table definition for storing batch-to-block mappings
src/rpc/eth/eth.rs	Implements last_l1_origin_by_batch_id method for retrieving L1 origins by batch ID
src/rpc/eth/auth.rs	Implements set_batch_to_last_block method and includes code formatting improvements

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