Add lib-pam to the supported system libraries

[fpoirotte]

Following the guidance in docs/extension-maintainers.md to open a discussion before adding a system library.

I'd like to propose adding Linux-PAM (lib-pam) to PIE's supported system libraries.

Context: I'm trying to use the PHP PAM extension. Support for PIE in being added inside the extension (see amishmm/php-pam@67578b0). The extension links pam dynamically, so being able to declare "require": { "lib-pam": "*" } and have PIE check (and optionally auto-install) it would improve the install experience.

Why it fits PIE's existing mechanism: Linux-PAM exposes a standard pam pkg-config module, so it can be detected the same way as the other supported libraries:

$ pkg-config --print-provides pam
pam = 1.7.2

Package names per distro:

• apt (Debian/Ubuntu): libpam0g-dev
• apk (Alpine): linux-pam-dev
• dnf/yum (Fedora/RHEL): pkgconfig(pam) (provided by pam-devel)

Ready branch: I have a commit ready with the pkg-config detection entry, the auto-install definitions, a passing data-provider test case, and the docs table update, and I'm happy to open a PR if this is welcome:
fpoirotte@ddc8bce

Would this addition be welcome?

[asgrim]

@fpoirotte yes please, a welcome addition indeed, although I did notice the format of the post is suspiciously similar to #678 😆

[asgrim]

Fixed in #691 - will be released in 1.5.0