Provide input("") and sync output to MicroPython

[WebReflection]

Description

This MR solves even more gotchas with MicroPython editor by providing an input("...") builtin utility that just works and by passing the output directly to the terminal whenever processed (the time.sleep(1) use case).

Changes

• move the pyterminal_write utility where it belongs
• create a builtin input function that simply returns whatever pyterminal_read returns
• test all cases are covered

Checklist

• All tests pass locally
• I have updated CHANGELOG.md
• I have created documentation for this(if applicable)