[Major] Make fmt use intuitive

[KnightNiwrem]

And:

• Standardise exported middleware type signature (i.e. () => mw instead of mw)
• Export transformer instead of middleware
• Provide Api Flavor with updated README
• remove parse_mode completely to signal strong disuse recommendation

TODO:

• answerInlineQuery

[KnorpelSenf]

I'd still love to see compatibility with i18n, but this is a topic for a future PQ in collaboration with @PonomareVlad

[PonomareVlad]

@KnorpelSenf nice, I will try to do something in this week 🌚

[KnorpelSenf]

Ping me or request a review once you want me to TAL

[KnightNiwrem]

Ping me or request a review once you want me to TAL

All right. The only thing left should be jsdocs, comments, readme, and updating website docs before release. It'll be.. awhile, but feel free to jump in if you need to.

[KnightNiwrem]

Tentatively postponed until grammY 2