Feature: speed limits

[maddymodd]

ThaUnknown closed my previous PR, but it is a valid PR, so here it is again.

Add heavily requested feature for setting speed limits

What is the purpose of this pull request? (put an "X" next to item)

[ ] Documentation update [ ] Bug fix [X] New feature [ ] Other, please explain:

What changes did you make? (Give an overview) I added the heavily requested global speed limit feature in the UI.

Which issue (if any) does this pull request address? https://github.com/webtorrent/webtorrent-desktop/issues/435 https://github.com/webtorrent/webtorrent-desktop/issues/657 https://github.com/webtorrent/webtorrent-desktop/issues/850 https://github.com/webtorrent/webtorrent-desktop/issues/1065 https://github.com/webtorrent/webtorrent-desktop/issues/1167 https://github.com/webtorrent/webtorrent-desktop/issues/1226 https://github.com/webtorrent/webtorrent-desktop/issues/1236 https://github.com/webtorrent/webtorrent-desktop/issues/1251 https://github.com/webtorrent/webtorrent-desktop/issues/1287 https://github.com/webtorrent/webtorrent-desktop/issues/1295 https://github.com/webtorrent/webtorrent-desktop/issues/1323 https://github.com/webtorrent/webtorrent-desktop/issues/1414 https://github.com/webtorrent/webtorrent-desktop/issues/1492 https://github.com/webtorrent/webtorrent-desktop/issues/1723 https://github.com/webtorrent/webtorrent-desktop/issues/1820

Is there anything you'd like reviewers to focus on? No

[github-actions[bot]]

Is this still relevant? If so, what is blocking it? Is there anything you can do to help move it forward?