added todo tasks

docs/core.todo

@@ -4,6 +4,8 @@ Build System:
     ✔ Modify .sh scripts to recognize the noeditor flag @done (1/25/2022, 3:59:23 PM)
 
 Core:
+    ☐ Move internal libs back into the core and refactor @high
+    ☐ Replace the File Browser (imgui) class with the NFD library (https://github.com/btzy/nativefiledialog-extended) @high
     ☐ For scripting switch to Wren instead of LUA @high
     ☐ Add log settings to the state file
     ✔ Add run modes (Editor, Game, Test) to state file @done (9/15/2021, 7:27:03 PM)