Pfs2tar improvements

[AKuHAK]

Pull Request checklist

Note: these are not necessarily requirements

• I reformatted the code with clang-format
• I checked to make sure my submission worked
• I am the author of submission or have permission from the original author
• Requires update of the PS2SDK or other dependencies
• Others (please specify below)

Pull Request description

[uyjulian]

I think it would be better to have it an option to explicitly specify the output tar name, and when not present, use the automatically generated tar name

[AKuHAK]

@uyjulian returned tar filename handle and added option to restore tar archives back to the HDD.

[Copilot]

Pull Request Overview

This PR enhances the pfs2tar tool with bidirectional tar support (extract and restore), timezone- and format-aware timestamp/mode conversions, and improved CLI and build integration.

• Added --extract/--restore modes with partition and overwrite options
• Implemented POSIX-to-iomanX time/mode converters and parent-directory creation
• Updated Meson configs and CI to always build and upload the new pfs2tar executable

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
src/pfs2tar.c	Added convert functions, restore logic, overwrite flag, and CLI
meson_options.txt	Changed enable_pfs2tar default to true
meson.build	Refactored pfs2tar executable definition and platform flags
.github/workflows/ci.yml	Added -Denable_pfs2tar=true to CI setups and upload artifact

Comments suppressed due to low confidence (2)

src/pfs2tar.c:179

• This new POSIX-to-iomanX time conversion logic lacks unit tests. Consider adding tests for edge cases (e.g., year boundaries, DST offsets) to validate correctness.

static void convert_posix_time_to_iox_time(time_t posix_time, unsigned char *iomanx_time)

src/pfs2tar.c:534

• [nitpick] The function name part_tar is ambiguous in contrast to tar_part; renaming it to something like restore_tar would improve clarity.

static int part_tar(const char *arg)

[uyjulian]

Lgtm