Get list of Wasm contracts with filtering and pagination
Page number, starts from 1, default 1 (for page-based pagination)
Page size, default 20, maximum 100
Cursor (for cursor-based pagination, optimized for large datasets, takes priority over page) For blocks: use block height (height) For transactions: use transaction number (tx_number) or combination of block height + transaction number
Filter by code ID (optional)
Filter by creator address (optional)
Filter by contract label (partial match, optional)
Return only CW20 token contracts (optional)