Fix EXEs not being found in PATH on Windows

[VamatoHD]

Summary:

There was an issue where the code attempted to check if luac was a valid file by calling .is_file() on each defined path without specifying a file extension. On Windows, this would fail since file require an extension.
I've added .exe to the default software paths, ensuring the check works correctly on Windows systems.

Notes:

This fix has only been briefly tested on Windows. I'm not sure if the changes work on Unix systems.

[Wolfyxon]

I'm pretty sure I got rid of actions::command_exists() and fixed this bug...

Please instead of modifying config values, in actions::parse_all():

1. Create a root CommandRunner with luac
2. Check if it exists (Use .exists())
3. For each script create a new instance of it and add the right args to it. You can use .with_args()

CommandRunner::exists() has way better checking than command_exists() so it's better to replace it than modify the config values like that.

[VamatoHD]

I'm not sure if that would fully resolve the issue…
The root cause lies in CommandRunner::get_path(), which is used by CommandRunner::exists(). It checks whether any path returned by CommandRunner::get_all_paths() is a file. However, this check fails because none of the generated paths include a file extension, leading to errors.

[Wolfyxon]

Hm you're right, the new check is flawed too.
Although the .exe extension should be checked there instead of it being added in the config.

I'll look into this in the morning.

[Wolfyxon]

All good, thanks!
I'll probably publish a bugfix release today with this.