additional model loader test files

...st-model/results/PGA/gmm/AM_09_INTERFACE_BASIN/curves.csv

...ources/model/test-model/results/PGA/gmm/ASK_14/curves.csv

.../model/test-model/results/PGA/gmm/ASK_14_BASIN/curves.csv

...s/model/test-model/results/PGA/gmm/ATKINSON_10/curves.csv

...del/results/PGA/gmm/BCHYDRO_12_INTERFACE_BASIN/curves.csv

...st-model/results/PGA/gmm/BCHYDRO_12_SLAB_BASIN/curves.csv

...urces/model/test-model/results/PGA/gmm/BSSA_14/curves.csv

...model/test-model/results/PGA/gmm/BSSA_14_BASIN/curves.csv

...sources/model/test-model/results/PGA/gmm/CB_14/curves.csv

...s/model/test-model/results/PGA/gmm/CB_14_BASIN/curves.csv

...sources/model/test-model/results/PGA/gmm/CY_14/curves.csv

...s/model/test-model/results/PGA/gmm/CY_14_BASIN/curves.csv

...model/test-model/results/PGA/gmm/NGA_EAST_2018/curves.csv

...test-model/results/PGA/gmm/NGA_EAST_SEEDS_2018/curves.csv

...-model/results/PGA/gmm/ZHAO_06_INTERFACE_BASIN/curves.csv

.../test-model/results/PGA/gmm/ZHAO_06_SLAB_BASIN/curves.csv

...st-model/results/PGA/magnitudes/Hilo HI,-155.06,19.70.csv

...-model/results/PGA/magnitudes/Memphis TN,-90.05,35.15.csv

...esults/PGA/magnitudes/Salt Lake City UT,-111.90,40.75.csv

...odel/results/PGA/magnitudes/San Jose CA,-121.90,37.35.csv