Archive FA24 and Add Script to Generate JSON (#809)

### Summary <!-- Required -->

Archive all active members from Fall 2024 into `fa24.json`.

Add a script to do this, runnable through
```
yarn workspace backend run create-member-archive <semester>
```

i.e.
```
yarn workspace backend run create-member-archive fa24
```

<!-- Optional: If adding/updating endpoints, update the backend api
specification (openapi.yaml) -->

### Notion/Figma Link <!-- Optional -->

<!-- If the changes have associated Notion pages/Figma design(s), please
include the links here.-->

### Test Plan <!-- Required -->
Ran the above command to generate the archive.

### Notes <!-- Optional -->

<!--- List any important or subtle points, future considerations, or
other items of note. -->

### Breaking Changes <!-- Optional -->

<!-- Keep items that apply: -->

backend/package.json

@@ -15,7 +15,8 @@
     "create-idol-images-pr": "esr scripts/create-idol-images-pr.ts",
     "backup-prod-db": "esr scripts/backup-prod-db.ts",
     "restore-from-backup": "esr scripts/restore-from-backup.ts",
-    "shoutout-leaderboard": "esr scripts/shoutout-leaderboard.ts"
+    "shoutout-leaderboard": "esr scripts/shoutout-leaderboard.ts",
+    "create-member-archive": "esr scripts/create-member-archive.ts"
   },
   "license": "AGPL-3.0",
   "dependencies": {

backend/scripts/create-member-archive.ts

@@ -0,0 +1,18 @@
+import * as fs from 'fs';
+import { approvedMemberCollection } from '../src/firebase';
+
+const semester = process.argv[2];
+
+if (!semester) {
+  // eslint-disable-next-line no-console
+  console.error('Please provide a semester identifier (e.g., fa24) as an argument');
+  process.exit(1);
+}
+
+approvedMemberCollection.get().then(async (colRef) => {
+  const members = await Promise.all(colRef.docs.map((doc) => doc.data()));
+  fs.writeFileSync(
+    `src/members-archive/${semester}.json`,
+    JSON.stringify({ members }, undefined, 2)
+  );
+});