fix broken MA05 interpolation

• fixed MA_05 so that the interpolated base gmm is used as needed
• corrected IMT ranges for BA08 site term interpolation
• consolidated MA_05 and Gomez22 tests

Corrected spectra (still a bit bumpy... interpolation in periods instead of frequency?):

Resolves #243 (closed)

added 1 commit

• 495d2afb - consolidate MA05 and Gomez22 tests

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changed the description

marked this merge request as ready

added 7 commits

• 495d2afb...f3735b90 - 5 commits from branch ghsc/nshmp:main
• fd0e5feb - fix broken MA05 interpolation
• db841ddf - consolidate MA05 and Gomez22 tests

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merged

mentioned in commit 4b0a361d