SimConnect redistributable (x64). Copied next to Meridian.exe on build.

  SimConnect.dll          MSFS 2024-era client (default)
  msfs2024/SimConnect.dll same
  msfs2020/SimConnect.dll older client, used if 2020 is the running sim

Meridian tries 2024 first when FlightSimulator2024.exe is running, 2020 first
otherwise, then the other, then any SimConnect.dll next to the sim.
Do not replace these with a 32-bit DLL.
