[ gzuuus/linktr-nostr ] feat(nostr): add soldiersats nip05 entry

- Add new NIP-05 entry for soldiersats in .well-known/nostr.json
- Fix nip05 validation to pass ndk instance in helpers.ts
- Adjust code formatting and indentation in provider.ts and helpers.ts
https://github.com/gzuuus/linktr-nostr/commit/5179ce1f08072e8ccd2ee7ba714b7b64bcc6d002