add video call feature in code room

[david-eom]

implement video call with agora RTC SDK
to use it, either sign up for an account at https://console.agora.io/ or use the following values in .env.local:

NEXT_PUBLIC_AGORA_APP_ID="07a3b6e024c94596ae016c0bb2646e38"
NEXT_PUBLIC_AGORA_APP_CERTIFICATE="201827a36cb44e3c9086019cca1eaa48"

[fannyjian]

Video chat function looks v cool!

However I'm getting this error when I denied mic and camera permissions, maybe we could handle that and display a toast/prompts to allow users to update permissions instead?

I also got this other error when I exit out of a code room and enter another matched room for the second time

[david-eom]

@fannyjian hmmm i could not replicate the permission error, on my side when i deny permission it will simply not show up... but lemme add some error boundary for that

for the second error i'll be pushing a fix for that!

edit: both should be fixed now, can you try it on ur side? :)

[fannyjian]

LGTM! Works perfect now:D