update IChannelConfigStore for channel adder implementation

Author: brunotm

contracts/src/v0.8/llo-feeds/v0.5.0/configuration/interfaces/IChannelConfigStore.sol

@@ -5,4 +5,15 @@ import {IERC165} from "@openzeppelin/[email protected]/interfaces/IERC165.sol";
 
 interface IChannelConfigStore is IERC165 {
   function setChannelDefinitions(uint32 donId, string calldata url, bytes32 sha) external;
+  function addChannelDefinitions(uint256 donId,uint32 channelAdderId,string calldata url,bytes32 sha) external;
+  function setChannelAdderAddress(uint32 channelAdderId,address adderAddress) external;
+  function setChannelAdder(uint256 donId,uint32 channelAdderId,bool allowed) external;
+  function getChannelAdderAddress(uint32 channelAdderId) external view returns (address);
+  function isChannelAdderAllowed(uint256 donId,uint32 channelAdderId) external view returns (bool);
+  function getAllowedChannelAdders(uint256 donId) external view returns (uint256[] memory);
+
+  event NewChannelDefinition(uint256 indexed donId, uint32 version, string url, bytes32 sha);
+  event ChannelDefinitionAdded(uint256 indexed donId, uint32 indexed channelAdderId, string url, bytes32 sha);
+  event ChannelAdderSet(uint256 indexed donId, uint32 indexed channelAdderId, bool allowed);
+  event ChannelAdderAddressSet(uint32 indexed channelAdderId, address adderAddress);
 }