Add ETH RPC API to get logs (#536)

* Add eth_getLogs API handler

* Transform events into logs

* Update codegen templates

* Allow GET requests

* Increment package verisons

* Remove unnecessary todo

* Add limit on getLogs results size

* Fix config template

packages/graph-node/test/utils/indexer.ts

@@ -91,6 +91,12 @@ export class Indexer implements IndexerInterface {
     return undefined;
   }
 
+  async getEvents (options: FindManyOptions<EventInterface>): Promise<Array<EventInterface>> {
+    assert(options);
+
+    return [];
+  }
+
   async getSyncStatus (): Promise<SyncStatusInterface | undefined> {
     return undefined;
   }