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nfpm.native_libs: Add RPM package depends from packaged pex_binaries (#22899)

## PR Series Overview

This is the second in a series of PRs that introduces a new backend:
`pants.backend.npm.native_libs`
Initially, the backend will be available as:
`pants.backend.experimental.nfpm.native_libs`

I proposed this new backend (originally named `bindeps`) in discussion
#22396.

This backend will inspect ELF bin/lib files (like `lib*.so`) in packaged
contents (for this PR series, only in `pex_binary` targets) to identify
package dependency metadata and inject that metadata on the relevant
`nfpm_deb_package` or `nfpm_rpm_package` targets. Effectively, it will
provide an approximation of these native packager features:
- `rpm`: `rpmdeps` + `elfdeps`
- `deb`: `dh_shlibdeps` + `dpkg-shlibdeps` (These substitute
`${shlibs:Depends}` in debian control files have)

### Goal: Host-agnostic package builds

This pants backend is designed to be host-agnostic, like
[nFPM](https://nfpm.goreleaser.com/).

Native packaging tools are often restricted to a single release of a
single distro. Unlike native package builders, this new pants backend
does not use any of those distro-specific or distro-release-specific
utilities or local package databases. This new backend should be able to
run (help with building deb and rpm packages) anywhere that pants can
run (MacOS, rpm linux distros, deb linux distros, other linux distros,
docker, ...).

### Previous PRs in series

- #22873

## PR Overview

This PR adds rules in `nfpm.native_libs` to add package dependency
metadata to `nfpm_rpm_package`. The 2 new rules are:

- `inject_native_libs_dependencies_in_package_fields`:

    - An implementation of the polymorphic rule `inject_nfpm_package_fields`.
      This rule is low priority (`priority = 2`) so that in-repo plugins can
      override/augment what it injects. (See #22864)

    - Rule logic overview:
        - find any pex_binaries that will be packaged in an `nfpm_rpm_package`
   ... (continued)

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Source Files on job test_python_linux_x86_64_3/10 - 19529437518.6