Description

Currently, Fast-CDR only integrates with CMake, but there are many projects out there that are not built with CMake and thus cannot directly include Fast-CDR. pkg-config is often the least common denominator by many build systems.

Generate and install a pkg-config file to make Fast-CDR also usable by other build systems.

I checked the CMake config file for the FASTCDR_DYN_LINK and FASTCDR_STATIC_LINK flags and had to do a bit of a dance in pkg-config, but I hope -DFASTCDR_DYN_LINK -UFASTCDR_DYN_LINK -DFASTCDR_STATIC_LINK works satisfactorily.

Contributor Checklist

• Commit messages follow the project guidelines.
• The code follows the style guidelines of this project.
• N/A Tests that thoroughly check the new feature have been added/Regression tests checking the bug and its fix have been added; the added tests pass locally
• N/A Any new/modified methods have been properly documented using Doxygen.
• Changes are backport compatible: they do NOT break ABI nor change library core behavior.
• Changes are API compatible.
• N/A New feature has been added to the versions.md file (if applicable).
• N/A Applicable backports have been included in the description.

Reviewer Checklist

• The PR has a milestone assigned.
• The title and description correctly express the PR's purpose.
• Check contributor checklist is correct.
• Check CI results: changes do not issue any warning.
• Check CI results: CI pass and failing tests are unrelated with the changes.