[VCM] Fix issues on certain systems (#12481)

- Don't depend on System.Windows.Forms in the Settings -> use callback instead
- Fix overlay image setting saving
- Use dynamic DLL loading in Interop
- Load VCM only when mf.dll is available

.github/actions/spell-check/expect.txt

@@ -399,6 +399,7 @@ ddd
 ddee
 ddf
 Deact
+DECLAR
 declspec
 decltype
 Dedup
@@ -1434,6 +1435,7 @@ ntdll
 NTFS
 NTSTATUS
 nuget
+null
 nullopt
 nullptr
 NUMLOCK
@@ -2311,6 +2313,7 @@ WINDOWPOSCHANGED
 WINDOWPOSCHANGING
 Windowsapp
 WINDOWSBUILDNUMBER
+Windowscodecs
 windowsdesktop
 windowssearch
 windowsx