Add timeout parameter to device connection

[pchev]

Hi @BobDenny ,

The default alpyca http timeout of 5 seconds is not enough in some specific case.
This include using old, non async driver with Ascom Remote.
To address this case we need a timeout parameter when creating an instance of the Alpaca client.

This PR add the parameter so for the device that need it we can do:
T = Telescope('localhost:11111', 0, 'http', 30) # use 30 second timeout
while this format still use the default of 5 seconds:
T = Telescope('localhost:11111', 0)

This is probably the less intrusive way to do it despite not all the method do require the long timeout, but it can be very complicated to use a configurable different timeout for every method.

I see in the code that only Telescope.FindHome use a specific timeout of 60 seconds, this is not modified by this change, it still use 60 seconds as specified in the _put() call.

Patrick

[pchev]

More comment, maybe I do that a bit too quickly...

Now I think it is better if I copy telescope.py to MyOldTelescope.py and add the timeout parameter to the _put() that need it, principally the Park method.

So there is no problem for me if you prefer to not merge this change.
I am also convinced that we must promote async call as much as possible.

Patrick