Added test for MorphISpheroid, some metadata in test files

[Sparks29032]

New issue raised involving testing MorphISpheroid see (#79).

Also, on ni_qmax25_psize30.cgr, G(r) is non-zero until 35, not 30. Should psize be changed to 35?

[codecov]

Codecov Report

Merging #80 (f8a8b82) into main (ad4df08) will increase coverage by 0.90%.
The diff coverage is 95.00%.

@@            Coverage Diff             @@
##             main      #80      +/-   ##
==========================================
+ Coverage   74.11%   75.01%   +0.90%     
==========================================
  Files          36       36              
  Lines        1406     1437      +31     
==========================================
+ Hits         1042     1078      +36     
+ Misses        364      359       -5     

Impacted Files	Coverage Δ
diffpy/pdfmorph/morphs/morphishape.py	81.25% <60.00%> (+15.73%)	⬆️
diffpy/pdfmorph/tests/test_morphshape.py	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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[sbillinge]

New issue raised involving testing MorphISpheroid see (#79).

Also, on ni_qmax25_psize30.cgr, G(r) is non-zero until 35, not 30. Should psize be changed to 35?

I think that is a yes on 30 vs 35. Good catch.

[sbillinge]

great @Sparks29032