Create Instance and Versioned URLs by Hand

[alexanderkiel]

I used reitit to generate the type, instance and versioned instance URL.
However reitit is very slow at encoding path parameters. because FHIR
ID's and our VID's are already URL safe, encoding isn't necessary. Also
the URL schema is fixed, so a decided to simply create them by hand. We
could revert to the old model if
metosin/reitit#477 is solved.

[codecov]

Codecov Report

Merging #339 (a98bbc2) into develop (ce1671f) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           develop     #339   +/-   ##
========================================
  Coverage    88.38%   88.38%           
========================================
  Files          200      200           
  Lines        12419    12414    -5     
  Branches       466      465    -1     
========================================
- Hits         10976    10972    -4     
  Misses         977      977           
+ Partials       466      465    -1     

Impacted Files	Coverage Δ
modules/rest-util/src/blaze/handler/fhir/util.clj	100.00% <100.00%> (ø)
.../interaction/src/blaze/interaction/transaction.clj	95.98% <0.00%> (+0.40%)	⬆️