feat: add resolver tracking for MOOV2 early resolver support (#108)

* feat: add resolver tracking for MOOV2 early resolver support

- Update ABI with new contract interface
- Add Resolver and ResolverHistory entities
- Add handlers for RoleGranted/RoleRevoked events (RESOLVER_ROLE only)
- Add tests for resolver permission tracking

State handling unchanged - getState() already calls on-chain, so
past-liveness requests will return Proposed instead of Expired after
the contract upgrade.

* feat: add dual-ABI getRequest fallback for L2 chains

The new MOOV2 ABI (from the resolver upgrade) adds a `proposalTime`
field to the `Request` struct returned by `getRequest`. Contracts not
yet upgraded still use the legacy struct without that field.

On L2 chains (where callHandlers are unsupported), the subgraph calls
`getRequest` directly to read bond, eventBased, and customLiveness.
This now tries the new ABI first and falls back to the legacy ABI if
it reverts, preventing indexing failures on mixed-version deployments.

Also moves network detection inside the handler to avoid module-level
side effects, and adds tests covering both ABI paths and the fallback
when both revert.

* docs: update managed oracle v2 polygon goldsky endpoint to 1.0.5

Author: md0x

README.md

@@ -149,7 +149,7 @@ This subgraph indexes events and function calls by the "Managed Optimistic Oracl
   - Goldsky: <https://api.goldsky.com/api/public/project_clus2fndawbcc01w31192938i/subgraphs/amoy-managed-optimistic-oracle-v2/1.1.0/gn>
 - Polygon
   - TheGraph: <https://api.studio.thegraph.com/query/1057/polygon-managed-optimistic-oracle-v2/1.2.0>
-  - Goldsky: <https://api.goldsky.com/api/public/project_clus2fndawbcc01w31192938i/subgraphs/polygon-managed-optimistic-oracle-v2/1.0.4/gn>
+  - Goldsky: <https://api.goldsky.com/api/public/project_clus2fndawbcc01w31192938i/subgraphs/polygon-managed-optimistic-oracle-v2/1.0.5/gn>
 
 ## Financial Contract Events