For intervals < ~24ms, the main thread as unable to cope up in handling
worker responses due to Mainframe rendering on each execution. To
resolve this, this commit delegates all execution-time states to child
components, controlled imperatively from Mainframe.
This yields huge performance boost, with main thread keeping up with
worker responses even at interval of 5ms.
This is a rather large commit that includes all of the following:
- React UI with code editor, runtime renderer and input-output panes
- Language providers for a sample language and Brainfuck
- Implementation of code execution in a web worker
- All-at-once unabortable execution of program fully functional
