fix: Codegens spell items (#1765)

### Summary
- Fixes some serialization issues with spell items
- Fixes accessibility issues with field spells and removes the awkward "InternalItem" concept
- Codegens the fields/items used in spells

Projects/UOContent/Migrations/Server.Items.ArcaneFocus.v0.json

@@ -0,0 +1,14 @@
+{
+  "version": 0,
+  "type": "Server.Items.ArcaneFocus",
+  "properties": [
+    {
+      "name": "StrengthBonus",
+      "type": "int",
+      "rule": "PrimitiveTypeMigrationRule",
+      "ruleArguments": [
+        ""
+      ]
+    }
+  ]
+}

Projects/UOContent/Migrations/Server.Items.TransientItem.v1.json

@@ -0,0 +1,14 @@
+{
+  "version": 1,
+  "type": "Server.Items.TransientItem",
+  "properties": [
+    {
+      "name": "Expiration",
+      "type": "System.DateTime",
+      "rule": "PrimitiveTypeMigrationRule",
+      "ruleArguments": [
+        "DeltaTime"
+      ]
+    }
+  ]
+}

Projects/UOContent/Migrations/Server.Mobiles.ArcaneFey.v0.json

@@ -0,0 +1,4 @@
+{
+  "version": 0,
+  "type": "Server.Mobiles.ArcaneFey"
+}

Projects/UOContent/Migrations/Server.Mobiles.ArcaneFiend.v0.json

@@ -0,0 +1,4 @@
+{
+  "version": 0,
+  "type": "Server.Mobiles.ArcaneFiend"
+}

Projects/UOContent/Migrations/Server.Mobiles.NatureFury.v0.json

@@ -0,0 +1,4 @@
+{
+  "version": 0,
+  "type": "Server.Mobiles.NatureFury"
+}

Projects/UOContent/Migrations/Server.Spells.Fifth.PoisonField.v0.json

@@ -0,0 +1,19 @@
+{
+  "version": 0,
+  "type": "Server.Spells.Fifth.PoisonField",
+  "properties": [
+    {
+      "name": "Caster",
+      "type": "Server.Mobile",
+      "rule": "SerializableInterfaceMigrationRule"
+    },
+    {
+      "name": "End",
+      "type": "System.DateTime",
+      "rule": "PrimitiveTypeMigrationRule",
+      "ruleArguments": [
+        "DeltaTime"
+      ]
+    }
+  ]
+}

Projects/UOContent/Migrations/Server.Spells.Fourth.FireFieldItem.v0.json

@@ -0,0 +1,27 @@
+{
+  "version": 0,
+  "type": "Server.Spells.Fourth.FireFieldItem",
+  "properties": [
+    {
+      "name": "Damage",
+      "type": "int",
+      "rule": "PrimitiveTypeMigrationRule",
+      "ruleArguments": [
+        ""
+      ]
+    },
+    {
+      "name": "Caster",
+      "type": "Server.Mobile",
+      "rule": "SerializableInterfaceMigrationRule"
+    },
+    {
+      "name": "End",
+      "type": "System.DateTime",
+      "rule": "PrimitiveTypeMigrationRule",
+      "ruleArguments": [
+        "DeltaTime"
+      ]
+    }
+  ]
+}

Projects/UOContent/Migrations/Server.Spells.Seventh.EnergyField.v1.json

@@ -0,0 +1,19 @@
+{
+  "version": 1,
+  "type": "Server.Spells.Seventh.EnergyField",
+  "properties": [
+    {
+      "name": "Caster",
+      "type": "Server.Mobile",
+      "rule": "SerializableInterfaceMigrationRule"
+    },
+    {
+      "name": "End",
+      "type": "System.DateTime",
+      "rule": "PrimitiveTypeMigrationRule",
+      "ruleArguments": [
+        "DeltaTime"
+      ]
+    }
+  ]
+}

Projects/UOContent/Migrations/Server.Spells.Seventh.GateTravelMoongate.v0.json

@@ -0,0 +1,4 @@
+{
+  "version": 0,
+  "type": "Server.Spells.Seventh.GateTravelMoongate"
+}

Projects/UOContent/Migrations/Server.Spells.Sixth.ParalyzeField.v0.json

@@ -0,0 +1,19 @@
+{
+  "version": 0,
+  "type": "Server.Spells.Sixth.ParalyzeField",
+  "properties": [
+    {
+      "name": "Caster",
+      "type": "Server.Mobile",
+      "rule": "SerializableInterfaceMigrationRule"
+    },
+    {
+      "name": "End",
+      "type": "System.DateTime",
+      "rule": "PrimitiveTypeMigrationRule",
+      "ruleArguments": [
+        "DeltaTime"
+      ]
+    }
+  ]
+}

Projects/UOContent/Migrations/Server.Spells.Third.WallOfStone.v0.json

@@ -0,0 +1,19 @@
+{
+  "version": 0,
+  "type": "Server.Spells.Third.WallOfStone",
+  "properties": [
+    {
+      "name": "Caster",
+      "type": "Server.Mobile",
+      "rule": "SerializableInterfaceMigrationRule"
+    },
+    {
+      "name": "End",
+      "type": "System.DateTime",
+      "rule": "PrimitiveTypeMigrationRule",
+      "ruleArguments": [
+        "DeltaTime"
+      ]
+    }
+  ]
+}