[Feature Request]: User interface, silent errors if not connected

[tinmarino]

Is your feature request related to a problem? Please describe.
Press f6 (Pause) or f10 (next) without connection gets an error message (here for f10)

Error detected while processing function vimspector#StepOver:
line    1:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home2/tourneboeuf/.vim/pack/bundle/opt/spector/python3/vimspector/debug_session.py", line 306, in StepOver
    if self._stackTraceView.GetCurrentThreadId() is None:
AttributeError: 'NoneType' object has no attribute 'GetCurrentThreadId'

Describe the solution you'd like

1. Hide the error message with:

if self._stackTraceView is None or self._stackTraceView.GetCurrentThreadId() is None:

instead of

self._stackTraceView.GetCurrentThreadId() is None:

2. Echo a nice little message MessageUser with a warning color asking him to connect first
3. Autoconnect ?

Describe alternatives you've considered

1. Do the first stepOver() is auto connecting if not connected ?
2. Is is preferable to silence the error, and even no message

Additional context
My solution would be 1, 2, 3. I'd be glad to make those changes with your desired solution.

[puremourning]

Yeah this is a bug. I’ve know about it for ages but been too lazy to fix it. A simple fix is to just make the methods tolerate being called before connection. Im happy with silence or a little user message.

[puremourning]

This was fixed in #85 and #77