New BC for quasi-neutrality

Still, the adjustment it is not iterative.
I need to build new subroutines to gather values of edges.

src/modules/moduleBoundary.f90

@@ -160,4 +160,19 @@ MODULE moduleBoundary
 
     END SUBROUTINE initIonization
 
+    subroutine initQuasiNeutrality(boundary)
+      implicit none
+
+      class(boundaryGeneric), allocatable, intent(out):: boundary
+
+      allocate(boundaryQuasiNeutrality:: boundary)
+
+      select type(boundary)
+      type is(boundaryQuasiNeutrality)
+        boundary%alpha = 0.d0
+
+      end select
+
+    end subroutine initQuasiNeutrality
+
 END MODULE moduleBoundary