Add Femtoampere to ElectricCurrent (#1202)

Author: r-chaykovskiy

Common/UnitDefinitions/ElectricCurrent.json

@@ -14,7 +14,7 @@
       "BaseUnits": {
         "I": "Ampere"
       },
-      "Prefixes": [ "Pico", "Nano", "Micro", "Milli", "Centi", "Kilo", "Mega" ],
+      "Prefixes": [ "Femto", "Pico", "Nano", "Micro", "Milli", "Centi", "Kilo", "Mega" ],
       "Localization": [
         {
           "Culture": "en-US",

Common/UnitEnumValues.g.json

@@ -276,7 +276,8 @@
     "Microampere": 5,
     "Milliampere": 6,
     "Nanoampere": 7,
-    "Picoampere": 8
+    "Picoampere": 8,
+    "Femtoampere": 9
   },
   "ElectricCurrentDensity": {
     "AmperePerSquareFoot": 1,

UnitsNet.NanoFramework/GeneratedCode/Quantities/ElectricCurrent.g.cs

@@ -8,6 +8,9 @@ namespace UnitsNet.Tests
     public class ElectricCurrentTests : ElectricCurrentTestsBase
     {
         protected override bool SupportsSIUnitSystem => true;
+
+        protected override double FemtoamperesInOneAmpere => 1e15;
+
         protected override double PicoamperesInOneAmpere => 1e12;
 
         protected override double NanoamperesInOneAmpere => 1e9;