Deprecate interruptible(boolean) and replace with interruptible/interruptibleMany

[djspiewak]

By "deprecate" I mean "set to private[effect] and undo the currying". We need to maintain binary compatibility but we can break source compatibility with this change. The goal should be for IO.interruptible(...) to be equivalent to what IO.interruptible(false)(...) is today, while IO.interruptibleMany(...) should be equivalent to IO.interruptible(true)(...). This change should also be applied to Sync.

Discussed in #2248

^{Originally posted by etspaceman August 19, 2021}
I'm wondering if we should create an alias around this. For example, interruptible(false) reads like it isn't interruptible. Perhaps we should consider interruptibleOnce and interruptibleMany.

[alexandrustana]

I could pick this up if nobody minds.

[djspiewak]

Go for it! The only tricky part will be pleasing binary compatibility while you go about it. Always feel free to ask questions!