Added Millijoules per square centimeter [mJ/cm²] in Irridiation (#650)

Author: Maradaehne

Common/UnitDefinitions/Irradiation.json

@@ -26,6 +26,7 @@
       "PluralName": "JoulesPerSquareCentimeter",
       "FromUnitToBaseFunc": "x*1e4",
       "FromBaseToUnitFunc": "x/1e4",
+      "Prefixes": [ "Milli" ],
       "Localization": [
         {
           "Culture": "en-US",

UnitsNet.Tests/CustomCode/IrradiationTests.cs

@@ -35,6 +35,8 @@ public class IrradiationTests : IrradiationTestsBase
 
         protected override double JoulesPerSquareMillimeterInOneJoulePerSquareMeter => 1E-6;
 
+        protected override double MillijoulesPerSquareCentimeterInOneJoulePerSquareMeter => 1e-1;
+
         protected override double WattHoursPerSquareMeterInOneJoulePerSquareMeter => 2.777777777777778e-4;
 
         protected override double KilowattHoursPerSquareMeterInOneJoulePerSquareMeter => 2.777777777777778e-7;