Fix firestoreusers2json

[sauntimo]

Changes

• fixes an apparent variable scoping issue in firestoreusers2json.ts which prevented the script from executing successfully. Seems that arguments from the CLI were not available in the listUsers function, so I passed them in explicitly.

auth git:(fix-firestoreusers2json) ✗ node firestoreusers2json.js
(node:95334) UnhandledPromiseRejectionWarning: TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string or an instance of Buffer or URL. Received undefined
    at Object.openSync (fs.js:454:10)
    at Object.writeFileSync (fs.js:1384:35)
    at /Users/tim/code/sauntimo/supabase-community/firebase-to-supabase/auth/firestoreusers2json.js:66:16
    at step (/Users/tim/code/sauntimo/supabase-community/firebase-to-supabase/auth/firestoreusers2json.js:33:23)
    at Object.next (/Users/tim/code/sauntimo/supabase-community/firebase-to-supabase/auth/firestoreusers2json.js:14:53)
    at /Users/tim/code/sauntimo/supabase-community/firebase-to-supabase/auth/firestoreusers2json.js:8:71
    at new Promise (<anonymous>)
    at __awaiter (/Users/tim/code/sauntimo/supabase-community/firebase-to-supabase/auth/firestoreusers2json.js:4:12)
    at main (/Users/tim/code/sauntimo/supabase-community/firebase-to-supabase/auth/firestoreusers2json.js:64:12)
    at Object.<anonymous> (/Users/tim/code/sauntimo/supabase-community/firebase-to-supabase/auth/firestoreusers2json.js:59:5)
(node:95334) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:95334) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

• tries to standardise the indentation a little
• updates the related .js file (with tsc firestoreusers2json.ts)
• Now successfully dumps firestore users in a json file 🙌