Add support for uncompressing .tar.xz archives

[ITaluone]

What changed

• Add UnTarXzTo extension on AbsolutePath, using SharpCompress.Readers.ReaderFactory to extract .tar.xz/.txz archives.
• Wire it into UncompressTo alongside the existing zip/tar.gz/tar.bz2 branches.
• Compressing to .tar.xz stays unsupported (CompressTo still fails fast with a clear message) — this PR only adds the read path.
• Add the SharpCompress package reference to Fallout.Utilities.IO.Compression.

Verification

Manual Target which runs this extension

Drawback

Compressing .tar.xz files does not work, since the upstream lib also can't do this.

Closes: #596

[ITaluone]

@dennisdoomen This should look familiar to you (did the same thing in FA.. this whole nodejs thing ;) )

[ChrisonSimtian]

@ITaluone i wanna bring in some more discipline, can you create an issue for that please and describe the use case we're trying to solve here?
I love the enthusiasm of adding new features but I think we should go the extra mile and help people understand why they want this feature :-)
Probably also needs some docs (which can be a dedicated PR linking to the same issue ;-) see how this becomes a shoe? :D )

And then I'd say lets target this for the next release, not the current one. I wanna close the lid on this one (already relabelled)

[ITaluone]

@ITaluone i wanna bring in some more discipline, can you create an issue for that please and describe the use case we're trying to solve here? I love the enthusiasm of adding new features but I think we should go the extra mile and help people understand why they want this feature :-) Probably also needs some docs (which can be a dedicated PR linking to the same issue ;-) see how this becomes a shoe? :D )

And then I'd say lets target this for the next release, not the current one. I wanna close the lid on this one (already relabelled)

@ChrisonSimtian
I don't get it? there is an issue already? Or isn't the issue detailed enough?

[ITaluone]

Hello @ChrisonSimtian

Can you do the final review here?

Thanks

[ChrisonSimtian]

Hello @ChrisonSimtian

Can you do the final review here?

Thanks

i'll try but it's a busy week rn and we're changing branching in this repo, so no rush 😅