[Feature Request] Instead of signing/encrypting/decrypting events directly, use a remote bunker.

[oren-z0]

Following NIP-46, I want to keep the main nsec only on a remote device (my phone), but still use my laptop.
This will be useful in some nostr websites that don't support bunker-login but do support login with browser extension.
Also, when I use a website that does support bunker-login, the temporary nsec for the communication is saved directly in the webpage, which is less secure, so the recommended approach is to remove permissions to this temporary nsec (in the bunker app) after every session, and recreate a new temporary nsec in the next login. But if the "temporary nsec" is kept only in browser extension, it is never exposed to the webpage itself, so it can be replaced less often.

Thanks!