Add UsGallonsPerMile, ImperialGallonPerMile, MegaukGallonPerDay, MegausGallonPerDay (#1225)

Co-authored-by: Andreas Gullberg Larsen <[email protected]>

Author: t03apt

Common/UnitDefinitions/VolumeFlow.json

@@ -168,6 +168,7 @@
       "PluralName": "UsGallonsPerDay",
       "FromUnitToBaseFunc": "{x} / 22824465.227",
       "FromBaseToUnitFunc": "{x} * 22824465.227",
+      "Prefixes": [ "Mega" ],
       "Localization": [
         {
           "Culture": "en-US",
@@ -268,6 +269,7 @@
       "PluralName": "UkGallonsPerDay",
       "FromUnitToBaseFunc": "{x} / 19005304",
       "FromBaseToUnitFunc": "{x} * 19005304",
+      "Prefixes": [ "Mega" ],
       "Localization": [
         {
           "Culture": "en-US",

Common/UnitDefinitions/VolumePerLength.json

@@ -100,6 +100,30 @@
           "Abbreviations": [ "yd³/ftUS" ]
         }
       ]
+    },
+    {
+      "SingularName": "UsGallonPerMile",
+      "PluralName": "UsGallonsPerMile",
+      "FromUnitToBaseFunc": "{x} / (1000 * 1609.344 / 3.785411784)",
+      "FromBaseToUnitFunc": "{x} * (1000 * 1609.344 / 3.785411784)",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "gal (U.S.)/mi" ]
+        }
+      ]
+    },
+    {
+      "SingularName": "ImperialGallonPerMile",
+      "PluralName": "ImperialGallonsPerMile",
+      "FromUnitToBaseFunc": "{x} / (1000 * 1609.344 / 4.54609)",
+      "FromBaseToUnitFunc": "{x} * (1000 * 1609.344 / 4.54609)",
+      "Localization": [
+        {
+          "Culture": "en-US",
+          "Abbreviations": [ "gal (imp.)/mi" ]
+        }
+      ]
     }
   ]
 }

Common/UnitEnumValues.g.json

@@ -1644,7 +1644,9 @@
     "MillionUsGallonPerDay": 66,
     "MegaliterPerHour": 68,
     "MegaliterPerMinute": 64,
-    "MegaliterPerSecond": 65
+    "MegaliterPerSecond": 65,
+    "MegaukGallonPerDay": 73,
+    "MegausGallonPerDay": 77
   },
   "VolumeFlowPerArea": {
     "CubicFootPerMinutePerSquareFoot": 1,
@@ -1657,7 +1659,9 @@
     "LiterPerKilometer": 4,
     "LiterPerMeter": 5,
     "LiterPerMillimeter": 6,
-    "OilBarrelPerFoot": 7
+    "OilBarrelPerFoot": 7,
+    "UsGallonPerMile": 8,
+    "ImperialGallonPerMile": 11
   },
   "VolumetricHeatCapacity": {
     "BtuPerCubicFootDegreeFahrenheit": 1,