Components v2

[FroostySnoowman]

This implements Components v2. A highly requested feature by the users of chat-exporter.

Demo: https://youtu.be/9Bn6yD9AmVI
Test File: https://mystb.in/f133a50c5f09a85ff5

[FroostySnoowman]

Tests export with everything flawless.
export.html

[mahtoid]

@FroostySnoowman
Code wise, everything seems fine. Only a few things, but nothing worth holding up PR for.

The only problem for me is styling is way too different from the direction the product sets, we go for 1:1 with Discord without corners cut (as best as we can).

The stuff for spoilers on hover, the Accessory thumbnail, buttons etc.
It's up to you if you want to take another go at that or leave to me and I'll try get to over the Christmas period.

[doluk]

• italic text in textDisplay isn't working (looks like it is consuming a linebreak too much)

• default selection in selects isn't working

• media galery is missing the spoiler text (works for normal files in a message). It also shouldn't show the description/alt of an item marked as spoiler

Expect the visual issues. I can confirm it works well with discord.py and pycord

[doluk]

Last minor changes to flow and look and we can merge. Great work!

[doluk]

lgtm