improve codebase, fix QDTEXT lookup table

[Uzlopak]

Actually started as improve codebase branch. It seems that there is mistake in the lookup table for QDTEXT, which is in main called QUOTED_STRING.

export const QUOTED_STRING: CharList = [ '\t', ' ' ];
for (let i = 0x21; i <= 0xff; i++) {
  if (i !== 0x22 && i !== 0x5c) { // All characters in ASCII except \ and "
    QUOTED_STRING.push(i);
  }
}

The generated Lookup Table in main contains also 0x7F, which is not a valid char of QDTEXT.

https://datatracker.ietf.org/doc/html/rfc9110#section-5.6.4

I guess, we actually can extract all the lookup table code into a separate file, because we dont need that lookup data in nodejs or undici, in contrast to error code and stuff.