Implement the ToConcept Function and Equivalence on Concept

[alexanderkiel]

Closes: #1872

[codecov]

Codecov Report

Attention: Patch coverage is 97.43590% with 1 line in your changes missing coverage. Please review.

Project coverage is 94.78%. Comparing base (a5e23d3) to head (66562f7).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1873      +/-   ##
==========================================
+ Coverage   94.70%   94.78%   +0.08%     
==========================================
  Files         320      320              
  Lines       19254    19278      +24     
  Branches      477      476       -1     
==========================================
+ Hits        18234    18273      +39     
+ Misses        543      529      -14     
+ Partials      477      476       -1     

Files	Coverage Δ
modules/cql/src/blaze/elm/code.clj	100.00% <100.00%> (+15.00%)	⬆️
...les/cql/src/blaze/elm/compiler/clinical_values.clj	100.00% <100.00%> (ø)
...s/cql/src/blaze/elm/compiler/structured_values.clj	74.48% <100.00%> (+1.02%)	⬆️
modules/cql/src/blaze/elm/concept.clj	100.00% <100.00%> (ø)
modules/cql/src/blaze/elm/list.clj	98.01% <100.00%> (ø)
modules/cql/src/blaze/elm/quantity.clj	99.24% <100.00%> (+3.00%)	⬆️
...dules/cql/src/blaze/elm/compiler/reusing_logic.clj	84.32% <92.30%> (+1.54%)	⬆️

... and 3 files with indirect coverage changes