Get rid of TDV-Specific dxInput and move it to BPCSharedComponent.dll, upgrade NuGet packages

[munawarb]

TDV implements a class called dxInput. As part of work in Treasure Hunt and wanting to use DirectInput there, I moved the dxInput class into BPCSharedComponent.dll and the new DLL is packaged with Treasure Hunt. The next step is to have the TDV project point to BPCSharedComponent.Input.DXInput instead of its dxInput.cs class.

While we're at it, I need to see if we can get away with using the same versions of all the SharpDX libraries, instead of weak-naming different assemblies because there are two NuGet packages for SharpDX in TDV, due to a bug in SharpDX that could very well be fixed now, according to the SharpDX GitHub. So let's point TDV to BPCSharedComponent and upgrade the NuGet packages if we can.