Pasqal local - Link munge optionally and inject a couple env variables into user env

[MatthieuMoreau0]

Description of Change

In this MR, I made a few updates to the spank plugin so that it supports the Pasqal Local QRMI introduced in qiskit-community/qrmi#32

Linking munge

For Pasqal Local we use munge to authenticate the root and end users, see QRMI MR for details on the auth flow. In this MR, I updated the CMakeLists.txt to link munge through the -DENABLE_MUNGE=ON option.

When the option is activated, munge is dynamically linked:

[root@login spank_qrmi]# ldd /shared/qrmi/target/release/libqrmi.so
	linux-vdso.so.1 (0x0000ffff90621000)
	libmunge.so.2 => /lib64/libmunge.so.2 (0x0000ffff905c3000)
	libssl.so.3 => /lib64/libssl.so.3 (0x0000ffff904df000)
	libcrypto.so.3 => /lib64/libcrypto.so.3 (0x0000ffff8f000000)
	libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x0000ffff904ae000)
	libm.so.6 => /lib64/libm.so.6 (0x0000ffff8f55f000)
	libc.so.6 => /lib64/libc.so.6 (0x0000ffff8ee52000)
	/lib/ld-linux-aarch64.so.1 (0x0000ffff905e4000)
	libz.so.1 => /lib64/libz.so.1 (0x0000ffff9047d000)

Defining env variables for slurm job ID and UID

Each task submitted to the pasqal local middleware will be mapped to a slurm job ID and a UID. The UID enables us to isolate user data, the slurm job ID will help us map QPU tasks to a slurm job ID for debugging.

These can be retrived using spank_get_item and are mapped to env variables prefixed by QRMI as they are intended to be consumed by the QRMI

Checklist ✅

• Have you included a description of this change?
• Have you updated the relevant documentation to reflect this change?
• Have you made sure CI is passing before requesting a review?

Ticket

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[MatthieuMoreau0]

This is finally ready for review alongside the QRMI MR.

@ohtanim I am happy to get your feedback on this optional linking of munge. This is the first QRMI implementation which requires linking to a C library that is not required for the other implementations. You may have an opinion on how to handle this properly in terms of documentation and/or distribution. Thank you!

[ohtanim]

@MatthieuMoreau0 Thank you very much for your enhancement. Your changes look good to me, but I left 2 minor comments. Do you think my comments are reasonable to Pasqal ?

[ohtanim]

Could you add Pasqal copyright?

[ohtanim]

Could you please add Pasqal copyright ?