BBOT python API should work inside non-main process

[TheTechromancer]

BBOT's python API should work even if it's not running in the main process. Right now, since we spawn processes of our own, some of our code is checking the name of the current process, which breaks in certain situtations.

There might be a way we can set an immutable value on first import that says, "hey, this is the name of the main process", and reference that instead.

As requested in:

• Sample code for bbot as a module doesn't work in pool or without start_method of fork #1785