feat(poly): added first pass implimentation of 3D constrained lane-emden solver

This has not currently been tested and this commit should not be viewed as scientifically complete

src/poly/solver/meson.build

@@ -0,0 +1,22 @@
+polySolver_sources = files(
+  'private/polySolver.cpp'
+)
+
+polySolver_headers = files(
+  'public/polySolver.h'
+)
+
+libPolySolver = static_library('polySolver',
+  polySolver_sources,
+  include_directories : include_directories('./public'),
+  cpp_args: ['-fvisibility=default'],
+  dependencies: [mfem_dep, meshio_dep, polycoeff_dep, polyutils_dep],
+  install: true
+)
+
+polysolver_dep = declare_dependency(
+  include_directories : include_directories('./public'),
+  link_with : libPolySolver,
+  sources : polySolver_sources,
+  dependencies : [mfem_dep, meshio_dep, polycoeff_dep, polyutils_dep]
+)