Changes to Get system config

removed the optional property rfq_max_slippage_overrides from the response with the 200 status

added the optional property rfq_default_max_slippage to the response with the 200 status

added the optional property rfq_max_slippage_overrides to the response with the 200 status

added the optional property assets_limit_per_account to the response with the 200 status

added the optional property dime_staking_contract_address to the response with the 200 status

added the optional property paraclear_evm_account_hash to the response with the 200 status

added the media type application/json for the response with the status 200