Implement customizable timeouts for calls

[andrewvy]

Implements #16.

New option called :timeout will be used (default 30s) for synchronous calls.

ChromeRemoteInterface.RPC.Page.printToPDF(page_pid, %{}, timeout: 60_000)

[garrinmf]

Is there anything stopping this from getting merged? I was getting ready to implement the same thing for my own needs.

[andrewvy]

Hey @garrinmf! Thanks for the ping, this PR wasn't merged in as the timeout functionality wasn't needed for my immediate purposes. I instead opted for the async option.

Though, I am totally happy to merge this functionality if it's needed. :)

[bcardarella]

@andrewvy we have a need for the timeout option. However, I believe the default should be the default GenServer timeout of 5_000 instead of the 30_000 in the PR.

Use case: we are generating PDFs. Some of them are taking more than 5 seconds to generate.

[garrinmf]

For my use case I need the timeout and blocking, not that I couldn't recreate it a level up but it'd be nice if it was baked in. And I'd concur that 5_000 probably makes more sense as a default.