Merged PR 16: Transform every single class components into functional component

This improve greatly the performance and the code cleaning.
It allows us to separate the inseparable class methods into modules functions

src/Components/MainMenu/MainMenu.tsx

@@ -36,18 +36,6 @@ export const MainMenu: React.FC<IMainMenuProps> = (props) => {
               "/>
             </label>
           </form>
-          {/* <button
-            onClick={() => setWindowState(WindowState.MAIN)}
-            className='block text-sm
-              mt-8 py-4 px-4
-              rounded-full border-0
-              font-semibold
-              transition-all
-              bg-blue-100 text-blue-700
-              hover:bg-blue-200'
-          >
-            Load
-          </button> */}
           <button
             onClick={() => setWindowState(WindowState.MAIN)}
             className='block text-sm