Introduce setting to automatically rename file to type name on save

Signed-off-by: Hope Hadfield <[email protected]>

package.json

@@ -1235,10 +1235,11 @@
               "lambdaExpressionFromAnonymousClass",
               "lambdaExpression",
               "switchExpression",
-              "tryWithResource"
+              "tryWithResource",
+              "renameFile"
             ]
           },
-          "default": [],
+          "default": ["renameFile"],
           "scope": "window",
           "order": 10
         },
@@ -1275,7 +1276,7 @@
           "default": false,
           "description": "Enable/disable auto organize imports on save action",
           "scope": "window",
-          "order": 20
+          "order": 20 
         },
         "java.sources.organizeImports.starThreshold": {
           "type": "integer",