adding multi-ifo functionality to foundmissed plotting script

[GarethCabournDavies]

needs extra input of --ifos to determine the multi-ifo nature of the input file

Adding ability to deal with hdf_injfind output as updated in #2499

Note that decisive_distance and dec_chirp_distance are no longer sensible things to plot, so are ignored in the multi-ifo case

[tdent]

OK, waiting on plot examples.

[GarethCabournDavies]

Plot Examples:

Two-detector run using the multi-ifo hdfinjfind (#2499):

https://ldas-jobs.ligo.caltech.edu/~gdavies/analyses/multiifodev/twodetcomparion/9._manual_run/H1L1-PLOT_FOUNDMISSED_ALL_MCHIRP_GRADM_ALLINJ-1185217218-720000.png

which is the same set of injections as:
https://ldas-jobs.ligo.caltech.edu/~derek.davis/cbc/O2/clean_data_runs/o2-c02-clean-analysis-19-v1.9.1/5._injections/5.03_BBHSEOBNRV4_INJ/H1L1-PLOT_FOUNDMISSED_SUB_MCHIRP_SUB_GRAD_EXC_BBHSEOBNRV4_INJ-1185217218-720000.png

Three-detector run, again with multiifo hdf_injfind:

https://ldas-jobs.ligo.caltech.edu/~gdavies/analyses/multiifodev/O3dev_analysis_22_multiifotest_no_inj_strip/9._manual_run/H1L1V1-PLOT_FOUNDMISSED_ALL_MCHIRP_GRADM_ALLINJ-1185217218-720000.png

Which is the same set as:
https://ldas-jobs.ligo.caltech.edu/~derek.davis/cbc/O2/clean_data_runs/o2-c02-clean-analysis-22-v1.9.1/5._injections/5.03_BBHSEOBNRV4_INJ/H1L1-PLOT_FOUNDMISSED_SUB_MCHIRP_SUB_GRAD_EXC_BBHSEOBNRV4_INJ-1187312718-428100.png

[GarethCabournDavies]

Requested foundmissed plots vs time for H2-detector vs 3-detector time:

2-detector (O2 run)
https://ldas-jobs.ligo.caltech.edu/~derek.davis/cbc/O2/clean_data_runs/o2-c02-clean-analysis-22-v1.9.1/5._injections/5.03_BBHSEOBNRV4_INJ/H1L1-PLOT_FOUNDMISSED_SUB_TIME_GRAD_BBHSEOBNRV4_INJ-1187312718-428100.png

3-detector:
https://ldas-jobs.ligo.caltech.edu/~gdavies/analyses/multiifodev/O3dev_analysis_22_multiifotest_no_inj_strip/9._manual_run/H1L1V1-PLOT_FOUNDMISSED_ALL_TIME_GRADM_ALLINJ-1185217218-720000.png

Edit:
This version is clearer, uses a smaller markersize to allow better comparison to the above 2 detector run
https://ldas-jobs.ligo.caltech.edu/~gdavies/analyses/multiifodev/O3dev_analysis_22_multiifotest_no_inj_strip/9._manual_run/H1L1V1-PLOT_FOUNDMISSED_ALL_TIME_GRADM_ALLINJ-1185217218-720000-smaller.png

You can see better where the two-detector gaps are being filled in

(I can commit and push this plotting style if it is preferred)

[tdent]

Approve