perf(allocations): reduced overall allocations by 95%, increaseed jacobian applicatin by 2x

This commit uses global pre allocated work space to dramatically reduce memory usage and allocation time

libmeanfield/interface/mapping/compactification/kelvin.cppm

@@ -12,6 +12,10 @@ export namespace mean_field::mapping::compactification {
     public:
         explicit KelvinCompactification(options::KelvinCompactificationOptions options);
 
+        [[nodiscard]] bool IsAffineInDisplacement() const noexcept override {
+            return true;
+        }
+
         [[nodiscard]] MappingStatus Evaluate(
             const ExteriorMapInput &input,
             ExteriorMapResult &result
@@ -45,4 +49,4 @@ export namespace mean_field::mapping::compactification {
 
         options::KelvinCompactificationOptions m_options;
     };
-} // namespace mean_field::mapping::compactification
+} // namespace mean_field::mapping::compactification