Dashboard/book widget (#6447)

* initial commit: new modelview widget that shows books

* moved the new command action to notebook contribution and addressed the comments

* localize changes

* removed changes from src/vs file and string changes

* make directory for each contribution

* typo fix

extensions/mssql/package.json

@@ -417,7 +417,7 @@
             {
               "name": "%title.endpoints%",
               "row": 0,
-              "col": 2,
+              "col": 4,
               "rowspan": 1.5,
               "colspan": 2,
               "widget": {
@@ -425,6 +425,17 @@
                   "id": "bdc-endpoints"
                 }
               }
+            },
+            {
+              "name": "%title.books%",
+              "row": 0,
+              "col": 2,
+              "colspan": 1,
+              "widget": {
+                "modelview": {
+                  "id": "books-widget"
+                }
+              }
             }
           ]
         }
@@ -932,4 +943,4 @@
       ]
     }
   }
-}
+}