Add BCH Social Channels to website

[blancomorao]

It would be great to add the following to the website:

1. Add 'community' to resources on the footer and homepage menu.
2. Link the telegram channel: https://t.me/bchchannel"

[melroy89]

I fully agree. Also add reddit, matrix and other sources.

Reddit: https://www.reddit.com/r/Bitcoincash/
Matrix room: #bch-friends:matrix.org
IRC channel: #bitcoincash on libera.