remove node_modules and .gitignore them

node_modules/nostr-tools/lib/esm/nip39.js

@@ -1,21 +0,0 @@
-// nip39.ts
-var _fetch;
-try {
-  _fetch = fetch;
-} catch {
-}
-function useFetchImplementation(fetchImplementation) {
-  _fetch = fetchImplementation;
-}
-async function validateGithub(pubkey, username, proof) {
-  try {
-    let res = await (await _fetch(`https://gist.github.com/${username}/${proof}/raw`)).text();
-    return res === `Verifying that I control the following Nostr public key: ${pubkey}`;
-  } catch (_) {
-    return false;
-  }
-}
-export {
-  useFetchImplementation,
-  validateGithub
-};