v1.40.3.8555+ support and other quirks.

* Now works with v1.40.3.8555 (inlined) and older versions too.
* Added a whitelist of features now rather than a global-enable.
* Refactored some code to use std::optional.
* Linux: Wrote proper hooking function. No unhooking support as it's unneeded.
* Windows: Now uses SafetyHook as we need trampolines.
* Windows: When building for debug, you can see queried features and their caller (return address offset from PMS base address); reverse on your own or query me.

windows/win32.vcxproj.filters

@@ -21,6 +21,9 @@
     <ClCompile Include="hook.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="safetyhook.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="hook.hpp">
@@ -29,5 +32,8 @@
     <ClInclude Include="proxy.hpp">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="safetyhook.hpp">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>