Build Mobiflight as x64

[neilenns]

In order to take adavantage of the new InputEvent APIs for MSFS2020 we need to build Mobiflight as x64.

• Remove Arcaze (see Remove Arcaze from Mobiflight #1313)
• Update vJoyInterface.dll and vJoyInterfaceWrap.dll with the x64 version
• Update Microsoft.FlightSimulator.SimConnect.dll and SimConnect.dll with the x64 version from the MSFS SDK
• Update the solution and project files to have an x64 build variant
• Update the projects to build as the x64 version
• Update the github CI action to build x64 instead of x86
• Update the github release action to build x64 instead of x86.
• Make sure unit tests still run

[neilenns]

This is more complicated than I originally thought. P3D and FSX both require the x86 version of SimConnect. I believe this means we'd need to build both an x86 and x64 version of Mobilfight.

It is definitely possible to conditionally include the right architecture dll at build time using MSBuild conditionals. We would also need to:

• Migrate the post-build steps from a basic script to actual msbuild commands (to copy the right architecture files post-build). It might be possible to just do this by including the files in the project and setting them to "copy if newer", then add conditionals to them.
• #ifdef out the code that adds input event UI to the x86 build, and ifdef out the single SimConnect call that executes the InputEvent set command