fix serialized types causing overflow

[iuwqyir]

TL;DR

Updated numeric field types to strings for better precision and updated openapi schema

What changed?

• Generated openapi for a new API endpoint /{chainId}/transfers for retrieving token transfers with various filtering options
• Added a new TransferModel definition to support the token transfers endpoint
• Changed several numeric field types from integer to string in API models to better handle large numbers:
  • In BlockModel: gas_limit and gas_used
  • In TransactionModel: value, gas_price, max_fee_per_gas, max_priority_fee_per_gas, effective_gas_price, and blob_gas_price

How to test?

1. Make a GET request to the new endpoint /{chainId}/transfers with appropriate filters
2. Verify the response contains token transfer data in the expected format
3. Check that numeric values are properly returned as strings without precision loss
4. Test various filter combinations (token type, address, block range, etc.)

Why make this change?

• The new transfers endpoint provides a dedicated way to query token transfer events, making it easier for clients to track token movements
• Converting numeric fields to strings prevents precision loss when dealing with large numbers (like gas prices and token values) that can exceed JavaScript's safe integer limits

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[iuwqyir]

• fix serialized types causing overflow #181 👈 (View in Graphite)
• main

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