fix(cli): correct subgraph hash key and output formatting

- Updated the SUBGRAPH_HASH_KEY constant to "SUBGRAPH" for consistency.
- Adjusted the output formatting in bootstrap command to ensure proper JSON structure for the subgraph hash configuration.
- Enhanced the clarity of the generated output for better usability.

Author: roderik

src/cli/commands/bootstrap/bootstrap.output.ts

@@ -234,7 +234,7 @@ const outputToFile = async (payload: OutputPayload): Promise<string> => {
       path: join(directory, `${artifactNames.subgraphConfigMapName}.json`),
       description: `${artifactNames.subgraphConfigMapName}.json`,
       contents: `${JSON.stringify(
-        { [SUBGRAPH_HASH_KEY]: payload.subgraphHash },
+        { [SUBGRAPH_HASH_KEY]: `kit:${payload.subgraphHash}` },
         null,
         2
       )}\n`,

src/cli/commands/bootstrap/bootstrap.subgraph.ts

@@ -1,6 +1,6 @@
 import { CID } from "multiformats/cid";
 
-const SUBGRAPH_HASH_KEY = "SUBGRAPH_HASH" as const;
+const SUBGRAPH_HASH_KEY = "SUBGRAPH" as const;
 
 const loadSubgraphHash = async (path: string): Promise<string> => {
   const trimmedPath = path.trim();