Refactor fill and fill-state CLIs to cli package (#257)

* Refactor fill CLI to cli package

* Refactor method to fill-state to graph-node

* Refactor fill-state CLI to cli package

* Move subgraph state utils to a separate file

* Refactor subgraph state helper methods to graph-node

* Update mock indexer

* Move watcher job-runner to util

* Remove mock server and data from erc20-watcher

* Import watcher job-runner from util

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

@@ -58,6 +58,10 @@ export class Indexer implements IndexerInterface {
     );
   }
 
+  async getEntitiesForBlock (blockHash: string, tableName: string): Promise<any[]> {
+    return [];
+  }
+
   async getBlockProgress (blockHash: string): Promise<BlockProgressInterface | undefined> {
     assert(blockHash);
 
@@ -217,6 +221,14 @@ export class Indexer implements IndexerInterface {
     return undefined;
   }
 
+  async getStates (where: FindConditions<StateInterface>): Promise<StateInterface[]> {
+    return [];
+  }
+
+  async createDiff (contractAddress: string, blockHash: string, data: any): Promise<void> {
+    return undefined;
+  }
+
   async createCheckpoint (contractAddress: string, blockHash: string): Promise<string | undefined> {
     return undefined;
   }
@@ -230,7 +242,7 @@ export class Indexer implements IndexerInterface {
   }
 
   async removeStates (blockNumber: number, kind: StateKind): Promise<void> {
-    // TODO Implement
+    return undefined;
   }
 
   getStateData (state: StateInterface): any {