[dbus-cxx] add new port

[luadebug]

• Changes comply with the maintainer guide.
• The name of the port matches an existing name for this component on https://repology.org/ if possible, and/or is strongly associated with that component on search engines.
• Optional dependencies are resolved in exactly one way. For example, if the component is built with CMake, all find_package calls are REQUIRED, are satisfied by vcpkg.json's declared dependencies, or disabled with CMAKE_DISABLE_FIND_PACKAGE_Xxx.
• The versioning scheme in vcpkg.json matches what upstream says.
• The license declaration in vcpkg.json matches what upstream says.
• The installed as the "copyright" file matches what upstream says.
• The source code of the component installed comes from an authoritative source.
• The generated "usage text" is accurate. See adding-usage for context.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Only one version is in the new port's versions file.
• Only one version is added to each modified port's versions file.

aui-framework/aui#635
dbus-cxx/dbus-cxx#191

Resolves: #47617 (comment) avoid using "default-features".

[JavierMatosD]

Since we had to revert this PR before we had to maintain the version entry from the last merge. Do you mind bumping the port version to 1 and simply adding a new entry rather than overwriting this one?

[luadebug]

Sounds good to me, but I do not know how this should look like.

[JavierMatosD]

See comment on version db