Implementation of 0D grid for analysis of collisional operators.

Still need to add a 0D pusher and the corresponding input configuration
and documentation.

src/modules/mesh/inout/0D/moduleMeshOutput0D.f90

@@ -0,0 +1,61 @@
+MODULE moduleMeshOutput0D
+
+  CONTAINS
+    SUBROUTINE printOutput0D(self, t)
+      USE moduleMesh
+      USE moduleRefParam
+      USE moduleSpecies
+      USE moduleOutput
+      IMPLICIT NONE
+
+      CLASS(meshParticles), INTENT(in):: self
+      INTEGER, INTENT(in):: t
+      INTEGER:: i
+      TYPE(outputFormat):: output
+      CHARACTER(:), ALLOCATABLE:: fileName
+
+      DO i = 1, nSpecies
+        fileName='OUTPUT_' // species(i)%obj%name // '.dat'
+        IF (t == 0) THEN
+          OPEN(20, file = path // folder // '/' // fileName, action = 'write')
+          WRITE(20, "(A1, 8X, A1, 6(A20))") "#","t","density", "velocity", "pressure", "temperature"
+          WRITE(*, "(6X,A15,A)") "Creating file: ", fileName
+          CLOSE(20)
+
+        END IF
+        
+        OPEN(20, file = path // folder // '/' // fileName, position = 'append', action = 'write')
+        CALL calculateOutput(self%nodes(1)%obj%output(i), output, self%nodes(1)%obj%v, species(i)%obj)
+        WRITE(20, "(I10, 6(ES20.6E3))") t, output%density, output%velocity, output%pressure, output%temperature
+        CLOSE(20)
+
+      END DO
+
+    END SUBROUTINE printOutput0D
+
+    SUBROUTINE printColl0D(self, t)
+      USE moduleMesh
+      USE moduleRefParam
+      USE moduleCaseParam
+      USE moduleCollisions
+      USE moduleOutput
+      IMPLICIT NONE
+
+      CLASS(meshGeneric), INTENT(in):: self
+      INTEGER, INTENT(in):: t
+
+    END SUBROUTINE printColl0D
+
+    SUBROUTINE printEM0D(self, t)
+      USE moduleMesh
+      USE moduleRefParam
+      USE moduleCaseParam
+      USE moduleOutput
+      IMPLICIT NONE
+
+      CLASS(meshParticles), INTENT(in):: self
+      INTEGER, INTENT(in):: t
+
+    END SUBROUTINE printEM0D
+
+END MODULE moduleMeshOutput0D