Remove global variables from files
Change type to interface

Use new TS config from @jitsi/eslint
Fix all lint errors

Convert files that use material-ui to TS (needed for material-ui upgrade)

Show GIF menu in reactions menu
Search GIFs using the GIPHY API
Show GIFs as images in chat
Show GIFs on the thumbnail of the participant that sent it
Move GIF focus using up/ down arrows and send with Enter
Added analytics