Use icons for mod, admin, bot role pills

[alectrocute]

Requirements

• [X] This is a feature request and not a bug report. Otherwise, please create a new bug report instead.
• [X] Please check to see if this request (or a similar one) already exists.
• [X] It's a single feature. Please don't request multiple features in one issue.

Describe the feature you'd like

• Use icons for mod, admin, bot role pills
• Related: getRoleLabelPill

[jsit]

Ideas for admin icon:

• https://thenounproject.com/icon/administrator-5344846/
• https://thenounproject.com/icon/option-5156710/
• https://thenounproject.com/icon/propeller-hat-120668/
• https://thenounproject.com/icon/viking-3593087/

Ideas for moderator icon:

• https://thenounproject.com/icon/clipboard-5825710/
• https://thenounproject.com/icon/whistle-1975583/
• https://thenounproject.com/icon/gavel-836685/

Ideas for bot icon:

• https://www.svgrepo.com/svg/358139/robot