feat: add turkchain

[Turkchain1919]

Description

Adds Turkchain mainnet support.

• Chain ID: 1919
• Domain ID: 1919
• RPC: https://rpc.turkscan.com
• Explorer: https://turkscan.com
• Blockscout API: https://turkscan.com/api

Backward compatibility

Yes

Testing

Chain metadata tested locally with Hyperlane CLI.

[coderabbitai]

📝 Walkthrough

Walkthrough

Two new configuration files for the turkchain blockchain are introduced: an addresses file establishing the core structure and a metadata file defining chain parameters, RPC endpoints, block explorer details, consensus rules, and gas overrides.

Changes

Cohort / File(s)

Summary

Turkchain Configuration chains/turkchain/addresses.yaml, chains/turkchain/metadata.yaml

Adds turkchain chain setup with core address structure and comprehensive metadata including TurkScan block explorer (Blockscout family), consensus parameters (2 confirmations, ~2s block time, finalized reorg period), chain identity fields (chainId, domainId, displayName, name, isTestnet), native token configuration (TC/TURK with 18 decimals), HTTP RPC endpoint (https://rpc.turkscan.com), and gas fee overrides (maxFeePerGas, maxPriorityFeePerGas).

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description covers all required sections with complete information about the chain configuration and testing details.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Title check	✅ Passed	The title 'feat: add turkchain' directly summarizes the main change - adding support for the Turkchain blockchain with all necessary configuration files.

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[Turkchain1919]

Please check

[Turkchain1919]

An approval is required. Could you please proceed with the approval? Thank you in advance

[Turkchain1919]

@yorhodes
An approval is required. Could you please proceed with the approval? Thank you in advance

[paulbalaji]

1. please add a minor changeset
2. run lint/formatter
3. ensure tests pass