Add NamespacePrefix that's used as the class name prefix for generating ObjC models.

Author: MIchaelMainer

src/GraphODataTemplateWriter/.config/ObjCSettings.json

@@ -1,21 +1,51 @@
 {
-    "StaticCodePrefix": "MS",
-    "TemplateMapping": {
-        "Shared": [
-          {
-            "_Comment" : "HACK: It seems the entire 'Shared' section is copy pasted from TemplateWriterSettings.json",
-            "_Comment2" : "with the sole purpose of preventing the Client from being named 'MSGraphGraphServiceClient'.",
-            "Template": "EntityClient", "SubProcessor": "EntityContainer", "Type": "Client", "Name": "Client"
-          },
+  "StaticCodePrefix": "MS",
+  "NamespacePrefix": "MSGraph",
+  "TemplateMapping": {
+    "Shared": [
+      {
+        "_Comment": "HACK: It seems the entire 'Shared' section is copy pasted from TemplateWriterSettings.json",
+        "_Comment2": "with the sole purpose of preventing the Client from being named 'MSGraphGraphServiceClient'.",
+        "Template": "EntityClient",
+        "SubProcessor": "EntityContainer",
+        "Type": "Client",
+        "Name": "Client"
+      },
 
-            { "Template": "EntityType", "SubProcessor": "EntityType", "Type": "Model", "Name": "<Class>" },
-            { "Template": "ComplexType", "SubProcessor": "ComplexType", "Type": "Model", "Name": "<Class>", "Ignore": "methodResponse" },
-            { "Template": "EnumType", "SubProcessor": "EnumType", "Type": "Model", "Name": "<Class>" }
-        ],
+      {
+        "Template": "EntityType",
+        "SubProcessor": "EntityType",
+        "Type": "Model",
+        "Name": "<Class>"
+      },
+      {
+        "Template": "ComplexType",
+        "SubProcessor": "ComplexType",
+        "Type": "Model",
+        "Name": "<Class>",
+        "Ignore": "methodResponse"
+      },
+      {
+        "Template": "EnumType",
+        "SubProcessor": "EnumType",
+        "Type": "Model",
+        "Name": "<Class>"
+      }
+    ],
 
-        "ObjC": [
-            { "Template": "ClientModels", "SubProcessor": "Other", "Type": "Model", "Name": "ClientModels" },
-            { "Template": "ODataEntities", "SubProcessor": "Other", "Type": "Model", "Name": "ODataEntities" }
-        ]
-    }
+    "ObjC": [
+      {
+        "Template": "ClientModels",
+        "SubProcessor": "Other",
+        "Type": "Model",
+        "Name": "ClientModels"
+      },
+      {
+        "Template": "ODataEntities",
+        "SubProcessor": "Other",
+        "Type": "Model",
+        "Name": "ODataEntities"
+      }
+    ]
+  }
 }