Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

noop-main.ll
; Can be used as an entry point for tests that rely purely on static
; initializer side-effects.

define i32 @main(i32 %argc, i8** %argv) {
entry:
  ret i32 0
}