JBTokenMapping
Notes:
- 
member: localToken The local token address.
 - 
member: minGas The minimum gas amount to bridge.
 - 
member: remoteToken The remote token address.
 - 
member: minBridgeAmount The minimum bridge amount.
 
struct JBTokenMapping {
    address localToken;
    uint32 minGas;
    address remoteToken;
    uint256 minBridgeAmount;
}