Add PoundForcePerFoot, PoundForcePerInch and PoundForcePerYard to ForcePerLength (#668)

* Added PoundForcePerFoot and PoundForcePerInch to ForcePerLength

* Added PoundForcePerYard to ForcePerLength

* Added overloads for multiplication operator to get ForcePerLength from Area * SpecificWeight (and vice-versa)

Author: lwestfall

Common/UnitDefinitions/ForcePerLength.json

@@ -35,6 +35,42 @@
           "Abbreviations": [ "кгс/м" ]
         }
       ]
+    },
+    {
+      "SingularName": "PoundForcePerFoot",
+      "PluralName": "PoundsForcePerFoot",
+      "FromUnitToBaseFunc": "x*14.59390292",
+      "FromBaseToUnitFunc": "x/14.59390292",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "lbf/ft" ]
+        }
+      ]
+    },
+    {
+      "SingularName": "PoundForcePerInch",
+      "PluralName": "PoundsForcePerInch",
+      "FromUnitToBaseFunc": "x*1.75126835e2",
+      "FromBaseToUnitFunc": "x/1.75126835e2",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "lbf/in" ]
+        }
+      ]
+    },
+    {
+      "SingularName": "PoundForcePerYard",
+      "PluralName": "PoundsForcePerYard",
+      "FromUnitToBaseFunc": "x*4.864634307",
+      "FromBaseToUnitFunc": "x/4.864634307",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "lbf/yd" ]
+        }
+      ]
     }
   ]
 }

UnitsNet.Tests/CustomCode/ForcePerLengthTests.cs

@@ -31,6 +31,9 @@ public class ForcePerLengthTests : ForcePerLengthTestsBase
         protected override double MillinewtonsPerMeterInOneNewtonPerMeter => 1E3;
         protected override double NanonewtonsPerMeterInOneNewtonPerMeter => 1E9;
         protected override double NewtonsPerMeterInOneNewtonPerMeter => 1;
+        protected override double PoundsForcePerFootInOneNewtonPerMeter => 6.8521766E-2;
+        protected override double PoundsForcePerInchInOneNewtonPerMeter => 5.710147162769201E-3;
+        protected override double PoundsForcePerYardInOneNewtonPerMeter => 0.205565298;
         protected override double MeganewtonsPerMeterInOneNewtonPerMeter => 1E-6;
 
         [Fact]

UnitsNet.Tests/GeneratedCode/ForcePerLengthTestsBase.g.cs

@@ -1,6 +1,8 @@
 // Licensed under MIT No Attribution, see LICENSE file at the root.
 // Copyright 2013 Andreas Gullberg Larsen ([email protected]). Maintained at https://github.com/angularsen/UnitsNet.
 
+using UnitsNet.Units;
+
 namespace UnitsNet
 {
     public partial struct SpecificWeight
@@ -11,6 +13,18 @@ public partial struct SpecificWeight
             return new Pressure(specificWeight.NewtonsPerCubicMeter * length.Meters, UnitsNet.Units.PressureUnit.Pascal);
         }
 
+        /// <summary>Get <see cref="ForcePerLength"/> from <see cref="SpecificWeight"/> times <see cref="Area"/>.</summary>
+        public static ForcePerLength operator *(SpecificWeight specificWeight, Area area)
+        {
+            return new ForcePerLength(specificWeight.NewtonsPerCubicMeter * area.SquareMeters, ForcePerLengthUnit.NewtonPerMeter);
+        }
+
+        /// <summary>Get <see cref="ForcePerLength"/> from <see cref="Area"/> times <see cref="SpecificWeight"/>.</summary>
+        public static ForcePerLength operator *(Area area, SpecificWeight specificWeight)
+        {
+            return new ForcePerLength(area.SquareMeters * specificWeight.NewtonsPerCubicMeter, ForcePerLengthUnit.NewtonPerMeter);
+        }
+
         /// <summary>Get <see cref="Acceleration"/> from <see cref="SpecificWeight"/> divided by <see cref="Density"/>.</summary>
         public static Acceleration operator /(SpecificWeight specificWeight, Density density)
         {