Add optional LALFrame dependency to LALPulsar
This MR adds an optional dependency on LALFrame to LALPulsar, using the Autoconf macro
The first patch is necessary to correctly re-configure the top-level build; otherwise, LALPulsar won't pick up the new LALFrame dependency.
The second patch adds the dependency, and updates the Conda/Debian/RPM packages.
lalpulsar/python/lalpulsar/simulateCW.py has an optional dependency on LALFrame, so this change is justified for existing code. The main purpose, however, is looking forward to eventually  moving CW programs in LALApps to LALPulsar. Since that will be a large change, I'd like to get some of the preliminary steps done first: in this case, getting the LALFrame dependency for LALPulsar in place, so that any packaging issues can be worked out during the next release.
 Not before all O3 CW analyses are done.
API Changes and Justification
Backwards Compatible Changes
- This change introduces no API changes
- This change adds new API calls
I guess this isn't an API change?
Backwards Incompatible Changes
- This change modifies an existing API
- This change removes an existing API