Add main menu overlay, creative inventory injection, mod discovery, logging, and Wine/Proton support

- Replace dbghelp with raw_pdb library for cross-platform PDB symbol resolution
- Add main menu branding overlay via C4JRender::Present hook
- Add creative inventory item injection from mods
- Add file-based logging (LogUtil) alongside console output
- Fix mod discovery with custom AssemblyLoadContext for proper type identity
- Add file dialog for game path selection in launcher
- Add CreativeTab enum and block/item creative tab assignment
- Unify build output to single ModLoader/build directory

ExampleMod/ExampleMod.cs

@@ -20,10 +20,13 @@ public class ExampleMod : IMod
                 .Hardness(3.0f)
                 .Resistance(15f)
                 .Sound(SoundType.Stone)
-                .Icon("ruby_ore"));
+                .Icon("ruby_ore")
+                .InCreativeTab(CreativeTab.BuildingBlocks));
 
         Ruby = Registry.Item.Register("examplemod:ruby",
-            new ItemProperties().MaxStackSize(64));
+            new ItemProperties()
+                .MaxStackSize(64)
+                .InCreativeTab(CreativeTab.Materials));
 
         Registry.Recipe.AddFurnace("examplemod:ruby_ore", "examplemod:ruby", 1.0f);