Add kitty keyboard protocol support to Unix _pyrepl

[jechol]

Summary

• enable kitty keyboard protocol when Unix _pyrepl prepares the terminal and restore the previous keyboard mode on exit
• parse kitty CSI u, CSI ~, and CSI 1;... key reports in unix_eventqueue and translate them into existing _pyrepl key events
• add regression tests for kitty key parsing and update REPL output sanitizing for the new terminal control sequences

Tests

• ./python.exe -m test -j1 test_pyrepl.test_eventqueue test_pyrepl.test_unix_console
• ./python.exe -m test -j1 test_pyrepl.test_pyrepl

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[python-cla-bot]

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[jechol]

Closing in favor of a PR from the renamed branch .