Changes to Create Wallet

for the path request parameter agent_id, the format was generalized from uuid to no format

request property service_budget_period was restricted to a list of enum values

request property wallet_type was restricted to a list of enum values

added the new daily enum value to the request property service_budget_period

added the new dual enum value to the request property wallet_type

added the new execution enum value to the request property service_budget_period

added the new monthly enum value to the request property service_budget_period

added the new mpp enum value to the request property wallet_type

added the new x402 enum value to the request property wallet_type

endpoint added