Abstract Buffer usage to Uint8Array

[Borewit]

Update dependency @tokenizer/token v0.3.0 for better Uint8Array abstraction

Update dependencies:
1 @tokenizer/token v0.3.0
2. peek-readable v4.0.0

Related to:

1. Replace Buffer with Uint8Array using DataView for encoding and decoding token-types#246, Ability to override Uint8Array with a inherited type e.g. Buffer tokenizer-token#4

Depends on:

1. Buffer abstraction by using Uint8Array where possible peek-readable#330
2. Replace Buffer with Uint8Array using DataView for encoding and decoding token-types#246 (unit test dependency)