Update some Meson internals

[QuLogic]

PR summary

As we depend on Meson 1.1, I went through the release notes to see if there was anything new we could take advantage of (as I only bumped the requirement to get the pybind11 dependency and nothing else).

This gets us 3 things:

• Rename meson_options.txt to meson.options, added in 1.1. Mostly a cosmetic change, but perhaps allows better file type detection from editors.
• Use dependency('dl') instead of cc.find_library('dl'); the builtin check might be more portable than just looking for a linkable library.
• Add license_files to Meson metadata; it doesn't do anything, but maybe if meson-python implements PEP639, this data will be used.

PR checklist

• [n/a] "closes #0000" is in the body of the PR description to link the related issue
• new and changed code is tested
• [n/a] Plotting related features are demonstrated in an example
• [n/a] New Features and API Changes are noted with a directive and release note
• [n/a] Documentation complies with general and docstring guidelines