Add Global Metadata Validation Checks

[Alrobbertz]

• Adds immediate validation checks on required pieces of global metadata. These would throw harder-to-read errors later during derivation. Better practice now to raise the error as early as possible.

closes #101

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (65ec6b1) 94.47% compared to head (033fda2) 94.28%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #105      +/-   ##
==========================================
- Coverage   94.47%   94.28%   -0.20%     
==========================================
  Files          10       10              
  Lines        1756     1767      +11     
==========================================
+ Hits         1659     1666       +7     
- Misses         97      101       +4     

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[dbarrous]

Looks good, just two typos. Will approve after the suggestions are merged

[dbarrous]

LGTM!