Update TODO

TODO.md

@@ -5,7 +5,7 @@
 - ActionJustPressed and KeyboardKeyJustPressed don't detect inputs consistently.
   - **Solution**: This is a problem related to custom frame pacing for fixed timestep. Raylib polls input in BeginFrame, which means certain functions related to JustPressed* may work incorrectly when polled in a separate timestep. This can be fixed if the entire input system will be moved to SDL or with a custom render + input backend altogether.
 - ~~Fix any remaining bugs with anchor positioning system.~~
-  - ~~Containers don't position their chilren correctly when using anchors and adding/removing them.~~ 
+  - ~~Containers don't position their chilren correctly when using anchors and adding/removing them.~~
 
 ## Core
 
@@ -69,6 +69,18 @@
 - Make action system use an InputMap resource instead.
 - Gamepad support
 
+## Diagnostics
+
+- Implement Profiler class.
+- Generate a Speedscope report.
+- Collect reports for systems
+  - Game
+  - Render
+  - Audio
+  - ResourceManager
+  - UI
+  - Particles
+
 ## UI
 
 - ~~Layout~~
@@ -86,4 +98,4 @@
 - Styling
   - Add style settings for UI panels (for buttons, labels, etc.).
   - Find a way to reference external assets in the style (fonts, textures).
-  - Create a default style for widgets.
+  - Create a default style for widgets.