refactor: parameterize handshake patterns

[richard-ramos]

In https://rfc.vac.dev/spec/70/ a new pattern is defined that uses a different DH, Cipher and Hash function.
js-noise currently only accepts 25519, ChaChaPoly and Sha256. With this PR it should be possible to use also other types as long as they follow stablelib Hash interface, DHKey and Cipher interface

• Allow Hash customization
• Allow DH customization
• Allow Cipher customization
  - Allow AES256GCM Cipher
  - Allow x448 key?
  - Define Noise_IX_448_AES256GCM_SHA256 pattern

Fixes #48

[richard-ramos]

IX pattern should be defined as follows:

[
    new MessagePattern(MessageDirection.r, [NoiseTokens.e, NoiseTokens.s]),
    new MessagePattern(MessageDirection.l, [
      NoiseTokens.e,
      NoiseTokens.s,
      NoiseTokens.es,
      NoiseTokens.se,
      NoiseTokens.ee,
    ]),
  ]

[richard-ramos]

The following tasks will be done in a separate PR:

Allow AES256GCM Cipher
Allow x448 key ?
Define Noise_IX_448_AES256GCM_SHA256 pattern

[weboko]

took longer to digest, good job!