Add Duration.Sol (day on Mars) (#1412)

Closes issue #1346 by adding sol, a Mars day, which lasts 88775 seconds.

Author: octastylos-pseudodipteros

Common/UnitDefinitions/Duration.json

@@ -154,6 +154,21 @@
           "Abbreviations": [ "jyr", "jyear", "jyears" ]
         }
       ]
+    },
+    {
+      "SingularName": "Sol",
+      "PluralName": "Sols",
+      "BaseUnits": {
+        "T": "Sol"
+      },
+      "FromUnitToBaseFunc": "{x} * 88775.244",
+      "FromBaseToUnitFunc": "{x} / 88775.244",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "sol" ]
+        }
+      ]
     }
   ]
 }

Common/UnitEnumValues.g.json

@@ -240,7 +240,8 @@
     "Nanosecond": 8,
     "Second": 9,
     "Week": 10,
-    "Year365": 11
+    "Year365": 11,
+    "Sol": 15
   },
   "DynamicViscosity": {
     "Centipoise": 1,

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

@@ -33,6 +33,8 @@ public class DurationTests : DurationTestsBase
 
         protected override double JulianYearsInOneSecond => 3.16880878140289e-08;
 
+        protected override double SolsInOneSecond => 1.126440159375963e-5;
+
         [Fact]
         public static void ToTimeSpanShouldThrowExceptionOnValuesLargerThanTimeSpanMax()
         {

UnitsNet.NanoFramework/GeneratedCode/Units/DurationUnit.g.cs

@@ -7,5 +7,6 @@ Minutes=m,min,minute,minutes
 Months30=mo,month,months
 Nanoseconds=ns,nsec,nsecs,nsecond,nseconds
 Seconds=s,sec,secs,second,seconds
+Sols=sol
 Weeks=wk,week,weeks
 Years365=yr,year,years