epic: refactor SDL2_Renderer usage to IRenderer and queued texture rendering

- Updated the testing guide to clarify the testing framework's organization and execution methods, improving user understanding.
- Refactored CMakeLists to include new platform-specific files, ensuring proper integration of the rendering backend.
- Modified main application files to utilize the new IRenderer interface, enhancing flexibility in rendering operations.
- Implemented deferred texture management in various components, allowing for more efficient graphics handling and improved performance.
- Introduced new methods for texture creation and updates, streamlining the rendering process across the application.
- Enhanced logging and error handling in the rendering pipeline to facilitate better debugging and diagnostics.

test/unit/zelda3/dungeon/room_object_encoding_test.cc

@@ -231,7 +231,7 @@ TEST(RoomObjectEncodingTest, Type3RealWorldExample) {
   // Expected: X=10, Y=15, ID=0xF99 (small chest)
   EXPECT_EQ(decoded.x(), 10);
   EXPECT_EQ(decoded.y(), 15);
-  EXPECT_EQ(decoded.id_, 0x99F);
+  EXPECT_EQ(decoded.id_, 0xF99);
 }
 
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