raw mode until end of program

[peperronii]

Avoid weird interactions with progress bar

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• This example has been added to .github/workflows/check.yml (for automatic testing)
• This example compiles cleanly with flags -vet -strict-style -vet-tabs -disallow-do -warnings-as-errors
• This example follows the core naming convention: https://github.com/odin-lang/Odin/wiki/Naming-Convention (exception can be made for ports of examples that need to match 1:1 to the original source).
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