ENH: Add PyDMWindow widget to configure hiding the nav bar, menu bar, and status bar components on first load

[craftablescience]

Command-line parameters exist to hide these components on startup, however these aren't possible to set in Qt Designer. This PR adds the PyDMWindow widget which can replace QWidget as the root of a display widget hierarchy, and it exposes the options to hide these components on first load as checkboxes in the properties section in Designer. When a display using this widget is loaded, it will apply the requested settings if it is the first display loaded in that instance of PyDM, similar to how the command-line parameters work.

Closes #1113

[nstelter-slac]

nice, this is cool! especially with the potential to expand with more properties

also i think it would be helpful to add to /examples a simple .ui file that showcases using PyDMWindow as a base.

and could we add an .rst file for PyDMWindow to the docs?
its nice to have doc pages for the widgets have some explanation about it above the api documentation, like https://slaclab.github.io/pydm/widgets/tab_widget.html, but most lack it atm.

[craftablescience]

also i think it would be helpful to add to /examples a simple .ui file that showcases using PyDMWindow as a base.

Done

and could we add an .rst file for PyDMWindow to the docs?

Done

[nstelter-slac]

tried building docs (https://github.com/slaclab/pydm?tab=readme-ov-file#building-the-documentation-locally), and getting some warnings that we should address.

also getting error when trying to load example

[craftablescience]

Hopefully resolved docs errors. I'm not sure why opening the example is giving you errors, it works on my machine

[nstelter-slac]

ok nice, example works for me now! sry prob was just something odd on my end.

also optional to add if u want,
but i see one last build issue (but unrelated to ur changes) when building the docs:

WARNING: autodoc: failed to import class 'channel.PyDMChannel' from module 'pydm'; the following exception was raised:
No module named 'pydm.channel'

we could include the fix in the patch so building is entirely clean

_--- a/docs/source/channel.rst
+++ b/docs/source/channel.rst
@@ -2,5 +2,5 @@

-.. autoclass:: channel.PyDMChannel
+.. autoclass:: pydm.widgets.channel.PyDMChannel
:members:_

[craftablescience]

Done, and rebased

[nstelter-slac]

thanks!