Make all DA scripts chdir to correct dir automatically

Previously only the deploy script would.

This is necessary to ensure the hardhat config is picked up
by hardhat.

src/app/zeko/da-layer/scripts/getBatches.ts

@@ -1,5 +1,9 @@
 #!/usr/bin/env node
 
+import { chdir } from "process";
+
+chdir(__dirname);
+
 import fs from "fs";
 import { ethers } from "hardhat";
 import { z } from "zod";

src/app/zeko/da-layer/scripts/postBatch.ts

@@ -1,5 +1,9 @@
 #!/usr/bin/env node
 
+import { chdir } from "process";
+
+chdir(__dirname);
+
 import fs from "fs";
 import { ethers } from "hardhat";
 import { z } from "zod";