feat(labels): add printable label offset for partially used sheets

[BlackFenix2]

I noticed when using Avery sheets or any other multi label page, I have been unable to re-use sheets if i did not print all of the label slots available.

I added a simple offset option to skip empty positions on a partially used sheet. This works fine for multiple labels per page and does not cause breaks with tapes like the brother TZE label generations.

I did use copilot to help find the controller that handles generating the bulk label PDF. I tested the implementation on my dev server and provided screenshots as proof. Please let me know if you have any questions.

[codacy-production]

Not up to standards ⛔

🔴 Issues 1 minor

Alerts:
⚠ 1 issue (≤ 0 issues of at least minor severity)

Results:
1 new issue

Category	Results
CodeStyle	1 minor

View in Codacy

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[r-xyz]

Thanks @BlackFenix2 for starting this PR; looking forward to see this functionality merged as it adds #18013

Would you have time to clean it up and finalize it? I would be happy to help or start a new one otherwise. :)

[jl-stellar]

As far as I can tell, the error reported by "Codacy" is this line (L 17 in resources/views/hardware/labels.blade.php):
$total_labels = count($assets) + $offset;
Since the message reads "operation must be bracketed", I assume that this would fix it:
$total_labels = (count($assets) + $offset);

[snipe]

This would also need to be targeted to the develop branch, per the dev documentation.