Add B Units (#904)

Author: bplett-wgtcorp

Common/UnitDefinitions/Frequency.json

@@ -91,6 +91,18 @@
           "Abbreviations": [ "с⁻¹" ]
         }
       ]
+    },
+    {
+      "SingularName": "BUnit",
+      "PluralName": "BUnits",
+      "FromUnitToBaseFunc": "x * x * 1e-3",
+      "FromBaseToUnitFunc": "Math.Sqrt(x * 1e3)",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "B Units" ]
+        }
+      ]
     }
   ]
 }

UnitsNet.NumberExtensions.Tests/GeneratedCode/NumberToFrequencyExtensionsTest.g.cs

@@ -24,8 +24,10 @@ public class FrequencyTests : FrequencyTestsBase
 
         protected override double CyclesPerMinuteInOneHertz => 60;
 
-        protected override double RadiansPerSecondInOneHertz => 2*Math.PI;
+        protected override double RadiansPerSecondInOneHertz => 2 * Math.PI;
 
         protected override double BeatsPerMinuteInOneHertz => 60;
+
+        protected override double BUnitsInOneHertz => 31.622776601683793; // = Math.Sqrt(1000);
     }
 }