ts-sdk

Fix default values for integrator fee rate and public key in FlashnetClient; remove console log from generateRouteSwapIntentMessage function.

Merge pull request #4 from flashnetxyz/feat/new-types-new-curve

lint

Update AMM gateway URL for REGTEST environment to point to the production API endpoint.

Increment version to 0.3.0 and add new API methods for route swaps and fee management, including getHostFees, executeRouteSwap, and withdrawIntegratorFees. Update types and intents accordingly.