Add DSMS System for the A-10

[fizzle77]

Adds a DSMS system for the A-10 which:

• Allows modification of the commonly changed settings in the DSMS INV page and the default weapon profiles.
• Allows setting an order for the default weapon profiles, so toggling through them with your DMS switch yields a predictable order.

Documentation updates are included. (Sneaked in the Misc System doc updates, too.)

Makes use of the new QueryBuilderBase functionality to grab the jet's loadout and apply settings wherever the weapons are loaded.

Adds db-a10-munitions.json that describes each weapon type's capabilities and variations in the configuration screens so they can be properly configured. Adding the remaining munition types, if I did it right, should be easy.

[ilominar]

I'm still figuring things out and forming opinions, but I think we're going to need to make UI/UX/doc changes for consistency and visual coherence.

As a start, I pushed some basic changes to Background attributes in the XAML to line up with the rest of the UI.

[fizzle77]

Sounds good! I tried to be consistent but wouldn’t be surprised if I missed some things. I’m also still on Windows 10 and there may be differences I’m not seeing because of that.