Make breadcrumbs consistent with .NET and ASP.NET docs (#2159)

* Make breadcrumbs consistent with .NET docs

* Add another level of breadcrumbs

entity-framework/breadcrumb/toc.yml

@@ -0,0 +1,70 @@
+- name: Docs
+  tocHref: /
+  topicHref: /
+  items:
+  - name: Entity Framework
+    tocHref: /ef/
+    topicHref: /ef/index
+    items:
+    - name: EF Core & EF6
+      tocHref: /ef/efcore-and-ef6/
+      topicHref: /ef/efcore-and-ef6/index
+      items:
+        - name: Port from EF6 to EF Core
+          tocHref: /ef/efcore-and-ef6/porting/
+          topicHref: /ef/efcore-and-ef6/porting/index
+
+    - name: Entity Framework Core
+      tocHref: /ef/core/
+      topicHref: /ef/core/index
+      items:
+        - name: Releases and planning
+          tocHref: /ef/core/what-is-new/
+          topicHref: /ef/core/what-is-new/index
+        - name: Get started
+          tocHref: /ef/core/get-started/
+          topicHref: /ef/core/get-started/index
+        - name: Fundamentals
+          tocHref: /ef/core/miscellaneous/
+          topicHref: /ef/core/miscellaneous/connection-strings
+        - name: Create a model
+          tocHref: /ef/core/modeling/
+          topicHref: /ef/core/modeling/index
+        - name: Manage database schemas
+          tocHref: /ef/core/managing-schemas/
+          topicHref: /ef/core/managing-schemas/index
+        - name: Query data
+          tocHref: /ef/core/querying/
+          topicHref: /ef/core/querying/index
+        - name: Save data
+          tocHref: /ef/core/saving/
+          topicHref: /ef/core/saving/index
+        - name: Database providers
+          tocHref: /ef/core/providers/
+          topicHref: /ef/core/providers/index
+        - name: Command-line reference
+          tocHref: /ef/core/miscellaneous/cli/
+          topicHref: /ef/core/miscellaneous/cli/index
+
+    - name: Entity Framework 6
+      tocHref: /ef/ef6/
+      topicHref: /ef/ef6/index
+      items:
+        - name: What's new
+          tocHref: /ef/ef6/what-is-new/
+          topicHref: /ef/ef6/what-is-new/index
+        - name: Fundamentals
+          tocHref: /ef/ef6/fundamentals/
+          topicHref: /ef/ef6/fundamentals/install
+        - name: Create a model
+          tocHref: /ef/ef6/modeling/
+          topicHref: /ef/ef6/modeling/index
+        - name: Query data
+          tocHref: /ef/ef6/querying/
+          topicHref: /ef/ef6/querying/index
+        - name: Save data
+          tocHref: /ef/ef6/saving/
+          topicHref: /ef/ef6/saving/index
+        - name: Additional resources
+          tocHref: /ef/ef6/resources/
+          topicHref: /ef/ef6/resources/blogs

entity-framework/docfx.json

@@ -63,7 +63,7 @@
       }
     ],
     "globalMetadata": {
-      "breadcrumb_path": "/ef/toc.json",
+      "breadcrumb_path": "/ef/breadcrumb/toc.json",
       "searchScope": [
         "Entity Framework"
       ],