widget.json.ts: just return instead of long if statement + add ?. operators for error handling
widget.png.ts make path universal
widget.ts: remove unnecessary guild db query as getPermission already checks it
Widget.ts make parameters required
Implemented the four widget related endpoints of the api. Partial user
object being returned as part of the widget.json endpoint [1] is an
intentional choice related to privacy [2].
The widget.json endpoint will require additional changes upon completion
of other work. Member details will need to return extra key/values for
connected users to voice channels. An additional avatar_url value will
hold an unique avatar url for the user + guild, fetched via a CDN
endpoint widget-avatars.
New dependencies `canvas` and `image-size`. Canvas is used to create the
widget.png endpoint image [3]. Image-size is used to set the canvas'
size to match the widget template images.
Use regex in determining if a NO_AUTHORIZATION_ROUTES is hit or not.
[1] https://discord.com/developers/docs/resources/guild#get-guild-widget
[2] https://github.com/discord/discord-api-docs/issues/1287
[3] https://discord.com/developers/docs/resources/guild#get-guild-widget-imageCloses: #9, #110
