We can always estimate a startup time now. Remove the nullability from
the result, cleanup the callsites, and eliminate
TotEstimator.mission_start_time since it no longer does anything useful.
Squashing 8 commits by DanAlbert:
- Track theater in ControlPoint.
Simplifies finding the owning theater of a control point. Not used yet.
- Clean some cruft out of FlightPlanBuilder.
- Clean up silly some exception handling.
- Move FlightPlan instantiation into the builder.
I'm working on moving the builder to be owned by the Flight, which will simplify callers that need to create (or recreate) flight plans for a flight.
- Simplify IBuilder constructor.
We have access to the theater via the flight's departure airbase now.
- Move FlightPlan creation into Flight.
For now this is just a callsite cleanup. Later, this will make it easier
to separate unscheduled and scheduled flights into different classes without complicating the layout/scheduling.
- Remove superfluous constructors.
- Remove unused Package field.
This is theoretically impossible, but for some reason the dialog that
owns this object QEditFlightDialog does not dispose properly on close,
so this handler may be called for a flight whose package has been
canceled, which is an invalid state for calling anything in
TotEstimator.
Fixes https://github.com/dcs-liberation/dcs_liberation/issues/2250
Split the oversized file into one per plan type. This also moves the
layout responsibility out of the oversized FlightPlanBuilder and into
each flight plan type file.
This appears to be incompatible with pyinstaller. I get the following
when trying to run the executable generated with pyside6:
```
Traceback (most recent call last):
File "qt_ui\main.py", line 29, in <module>
File "PyInstaller\loader\pyimod03_importers.py", line 476, in exec_module
File "qt_ui\windows\QLiberationWindow.py", line 28, in <module>
File "PyInstaller\loader\pyimod03_importers.py", line 476, in exec_module
File "qt_ui\widgets\map\QLiberationMap.py", line 11, in <module>
ImportError: could not import module 'PySide6.QtPrintSupport'
```
