Introduce Record for Attachment

[alexanderkiel]

No description provided.

[codecov]

Codecov Report

Merging #364 (189d7da) into develop (cf06190) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #364      +/-   ##
===========================================
+ Coverage    88.88%   88.89%   +0.01%     
===========================================
  Files          202      202              
  Lines        12753    12761       +8     
  Branches       461      461              
===========================================
+ Hits         11335    11344       +9     
+ Misses         957      956       -1     
  Partials       461      461              

Impacted Files	Coverage Δ
...odules/fhir-structure/src/blaze/fhir/spec/impl.clj	95.10% <ø> (ø)
...odules/fhir-structure/src/blaze/fhir/spec/type.clj	89.41% <100.00%> (+0.29%)	⬆️
...fhir-structure/src/blaze/fhir/spec/type/macros.clj	100.00% <100.00%> (ø)