Add pyramid `RefElemData`

[codecov[bot]]

Codecov Report

Merging #132 (275ff0e) into main (df8475f) will increase coverage by 0.03%. The diff coverage is 97.50%.

@@            Coverage Diff             @@
##             main     #132      +/-   ##
==========================================
+ Coverage   97.31%   97.34%   +0.03%     
==========================================
  Files          25       25              
  Lines        2902     2937      +35     
==========================================
+ Hits         2824     2859      +35     
  Misses         78       78              

Impacted Files	Coverage Δ
src/ref_elem_utils.jl	87.23% <75.00%> (+0.56%)	:arrow_up:
src/RefElemData.jl	95.78% <100.00%> (+0.04%)	:arrow_up:
src/RefElemData_polynomial.jl	100.00% <100.00%> (ø)

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more