Enhancement of Events in FaultDisputeGame.sol

**Is your feature request related to a problem? Please describe.**

It is really hard to find a corresponding `FaultDisputeGame` on-chain for a specific withdrawal transaction on L2. Users have to loop through all created games to find the right one.

**Describe the solution you'd like**

One way to solve this problem is to emit the `l2BlockNumber` and the `rootClaim` in the `Resolved` event, so we can use the subgraph to index all events and get the right one or we can directly query events on chain without calling the `l2BlockNumber` again.

**Additional context**

We have created this PR to resolve this issue. https://github.com/bobanetwork/boba/pull/226

Does this make sense, and is it helpful for others?