Custom Join Meeting button component

[fmartingr]

Right now in order to join a meeting only a link is present in the reminders, but since we can know if the meeting is happening in an online conference room it will be better UX to have a button with a custom icon depending on the conferencing software being used.

Mockup screenshot

Acceptance criteria

• Add logic that parses the meeting conference software (potentially by domain?)
  • Ensure it recognises if the location is a Mattermost Call by checking for the site url
• Define conference icons for some of the conferencing software (mattermost calls, zoom, google meet) and a generic one to use as fallback.
• Define a custom component that will use that data to render a the button with custom styling
• It should have a proper fallback to work on mobile too (not rendering the button and having the link).