Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

blank_key_template.md
```
/* Name
 * ,---------+------+------+------+------+------+------+------+------+------+------+------+------.
 * |         |      |      |      |      |      |      |      |      |      |      |      |      |
 * |---------`------`------`------`------`------`------`------`------`------`------`------`------|
 * |          |      |      |      |      |      |      |      |      |      |      |            |
 * |----------`------`------`------`------`------`------`------`------`------`------`------------|
 * |           |      |      |      |      |     |       |      |      |      |      |           |
 * |-----------`------`------`------`------`-----'-------`------`------`------`------`-----------|
 * |        |       |       |       |          |          |         |        |        |          |
 *  `-------+-------+-------+-------+---^^^----+---^^^----+---------+--------+--------+----------'
 */
```