WIP Fixing Noise handshake issue

[fix]

I can confirm i managed to fix holepunchto/hypercore#452 namely this error.

Noise handshake failed
    at NoiseSecretStream._onhandshakert (bundle.js?t=1699883966724:403:33)
    at NoiseSecretStream._open (bundle.js?t=1699883966724:451:32)
    at WritableState.updateNonPrimary (bundle.js?t=1699883966724:21823:14)
    at WritableState.update (bundle.js?t=1699883966724:21798:72)
    at WritableState.updateWriteNT (bundle.js?t=1699883966724:22147:10)

The PR is self explanatory.

[fix]

still WIP, i discovered there was a missing implementation crypto_scalarmult_ed25519_noclamp that is added now

however somehow debugging the code, it sounds the noise handshake fails now because of verification fail here, where the computed mac is not the one expected

sodium-javascript/crypto_aead.js

Line 129 in f19e6c8

const ret = crypto_verify_16(computed_mac, 0, mac, 0)

not sure if this is related...

[fix]

ok bummer, i used curve25519 instead of ed25519, working on it