docs(council): Introduce macros via Antora partials
    
    NOTE: This commit does NOT change content, policy, or the substance of
    any written documentation that requires Fedora Council review. This
    change only impacts changes related to the Antora toolchain.
    
    This commit integrates the team directory profile that was introduced a
    few years ago into the Fedora Council documentation. This makes several
    common URLs used across the Fedora Council Antora component accessible
    as macros. Instead of hard-coding the same URL across all of the Fedora
    Council documentation, the macros can be used to more easily re-use the
    same URL consistently across multiple pages.
    
    This commit is one of several that gradually refactors the Fedora
    Council documentation to properly fit into an AsciiDoc and Antora
    workflow.
    
    Signed-off-by: Justin W. Flory (he/him) <jwf@redhat.com>