Rework solution structure to allow more types of library projects (#196)

* Rename avalonia & wpf samples

* Rename rest of samples

* fix sample readme

* Fix compat util tests

* rename / move all src projects

* remove package lock files and move libC# again

* Add rust lib and cargo workspace

* Replace locksmith lib with new filelocksmith-rs library

* Deprecated type

* fix setup compile

* Use thiserror for error handling

* Rename some enums and formatting

* Add missing SHA256

* wip c++ library

* cpp wip

* alphabetize readme

* Try to get build working again

* Fix some conditionally compiled bits

* cross config should be in workspace root

* Fix PathHelper for new rust target dir

* Missed one old path to velopack.csproj

* remove obsolete coverage code

* testawareapp.exe no longer exists

samples/CSharpUnityMono/BuildVisualStudioSolution/UnityMonoSample/Main.cpp

@@ -0,0 +1,27 @@
+#include "PrecompiledHeader.h"
+#include "..\UnityPlayerStub\Exports.h"
+
+//for Velopack
+#include "..\Velopack.hpp"
+#include "Windows.h"
+#include <shellapi.h>
+//for Velopack
+
+// Hint that the discrete gpu should be enabled on optimus/enduro systems
+// NVIDIA docs: http://developer.download.nvidia.com/devzone/devcenter/gamegraphics/files/OptimusRenderingPolicies.pdf
+// AMD forum post: http://devgurus.amd.com/thread/169965
+extern "C"
+{
+    __declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
+    __declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;
+}
+
+int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nShowCmd)
+{
+    //for Velopack
+    int pNumArgs = 0;
+    wchar_t** args = CommandLineToArgvW(lpCmdLine, &pNumArgs);
+    Velopack::startup(args, pNumArgs);
+    //for Velopack
+    return UnityMain(hInstance, hPrevInstance, lpCmdLine, nShowCmd);
+}