Find more lightweight libraries to replace libsodium.js

[webmaster128]

libsodium.js is amazing but big. This could be mitigated by using our own build. However, I assume the better path is to break it down into the algorithms we need and have them in separate modules. This allows optimizers to better remove unused code. Also only Argon2 needs Wasm speed.

Replacements for the following algos are needed

• Argon2 (see Add custom argon2 Wasm implementation #907; looks surprisingly good now with the latest Rust compiler)
• Ed25519 (use different implementation, see Switch Ed25519 implementation to zip215 compliant library #584)
• xchacha20poly1305_ietf

[o-az]

Ed25519 -> https://github.com/paulmillr/noble-ed25519
Argon2id -> https://github.com/paulmillr/noble-hashes#argon2