[FEAT.] : Linux AppImage Support

[Parapass]

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There is no AppImage available to use BSManager on Linux natively

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Use the publish script to also build an AppImage along with the Windows executables.

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Runs under Wine fine but requires .NET 6 which cannot be easily downloaded on Linux

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AppImages work across multiple different Linux distros

[RedlineTriad]

Working on linux support myself, the app image seems to have some extra issues though. It doesn't have file permissions to write to anything (might be my problem idk) and also throws quite a few exceptions read only filesystem.