feat: Updated icons

[tassoevan]

Updates our icon list. Additionally, now we:

• keep a glyphsMapping.json file that guarantees each icon will be uniquely used by the same unicode character across future versions;
• fix broken symbolic links for aliases;
• prefer naming icons according to what they look instead of what feature they represent.

[gabriellsh]

Some of the icons cited are used today in the main codebase with these names, but I think all icon names should follow a pattern in order to facilitate usage. Taking that in mind:

edit should be pencil
add-reaction should be add-emoji.
change should be arrow-change or arrow-loop, or atleast start with arrow- (I think arrow-left-right would be most suitable)
import should be arrow-down-box
multiline should be arrow-return
mobile should be smartphone or maybe mobile-device
new-chat should be pencil-box
post should be document
queue could be box-stacked
share should be arrow-up-box
transfer should be arrow-right-user
team should be user-stacked
upload should be arrow-up-cloud or maybe upload-cloud
sign-out should be arrow-right-box

These ones have duplicates:
attachment - file-generic - clip
back - arrow-back - reply-directly
cancel - circle-cross
checkmark-circled - circle-check
circled-arrow-down - circle-arrow-down - download
discover - globe
edit-rounded - new-chat
th-list - sheet - files-sheet
audio - files-audio
add-user - user-plus
jump - jump-to-message - arrow-jump
map-pin - pin-map
files-video - video
files-zip - zip
send-active - send-filled
shield - shield-alt
sort-amount-down - sort
reload - refresh

These do not have a direct name-to-symbol relation, but I didn't find a better name for it
canned-response
live
livechat
new-window
podcast
thread

I triple checked to see if I didn't miss any, but there might be a couple that got overseen.

[tassoevan]

@gabriellsh

• I've renamed add-reaction to emoji-plus, and others as well.
• I'll apply most of the suggestions, but mobile exists as a mirror to desktop; should it be renamed too?
• The duplicates exist because they're temporary aliases to older icon names that we need to deprecate on RC first.

Addendum: check https://open.rocket.chat/public/icons.html for a list of the icons to be replaced.

[gabriellsh]

It's okay for me. I just mentioned mobile because the word itself is an adjective, but Desktop isn't. Maybe it could be mobile-phone, but I think there's no problem in having an odd one out.