[Analyzers][CPP] turn on Warning 4100 (#21449)

* Analyzers CPP

Changing the warning level from 3 to 4.
change some project files to make them use the warning config in cpp props file.

* Analyzers C++ turn on warning 4706

Change Cpp.Build.props file to enable 4706
fix BugReportTool code to get rid of 4706

* Turn on warning 4100 and fix the code

* Follow c++ core guidelines

* Adapting to PR comments

src/modules/previewpane/powerpreview/dllmain.cpp

@@ -31,7 +31,7 @@ HRESULT CALLBACK DllGetClassObject(REFCLSID clsid, REFIID riid, void** ppv)
     return hr;
 }
 
-BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
+BOOL APIENTRY DllMain(HMODULE /*hModule*/, DWORD ul_reason_for_call, LPVOID /*lpReserved*/)
 {
     switch (ul_reason_for_call)
     {