feat(mapper): finished porting over mapper

src/meson.build

@@ -1,5 +1,8 @@
 include_dir = include_directories('include')
 
+# TODO: Really we should make a dependency graph between the various modules
+#       and then make sublibraries for each module that build themselves in the correct order
+#       and then link together at the end.
 serif_sources = files(
   'lib/serif/discretization/domain/mesh/topology.cpp',
   'lib/serif/discretization/domain/schema/validation/results.cpp',
@@ -8,6 +11,10 @@ serif_sources = files(
   'lib/serif/mapping/compactification/kelvin.cpp',
   'lib/serif/mapping/data.cpp',
   'lib/serif/mapping/domain_mapper.cpp',
+  'lib/serif/mapping/transformations.cpp',
+  'lib/serif/mapping/volume_cache.cpp',
+  'lib/serif/mapping/evaluator.cpp',
+  'lib/serif/mapping/coefficients.cpp'
 )
 
 serif_lib = library(