CLI history for stdin based apps

[rajsite]

When using tools like the python repl it would be useful for the cli history (up and down arrows) to include stdin buffers entered interactively. For example:

1. Navigate to Webassembly.sh and run python
2. Enter a line, for example 2+2, and press enter
3. Push the up arrow. Notice that 2+2 is not shown, instead the previously entered python command is shown