Add Bazel support for gocodePackageLookupMode

package.json

@@ -796,10 +796,11 @@
           "type": "string",
           "enum": [
             "go",
-            "gb"
+            "gb",
+            "bzl"
           ],
           "default": "go",
-          "description": "If go, use standard Go package lookup rules for completions. If gb, use gb-specific lookup rules for completions",
+          "description": "Used to determine the Go package lookup rules for completions by gocode. Only applies when using nsf/gocode. Latest versions of the Go extension uses mdempsky/gocode by default.",
           "scope": "resource"
         },
         "go.useCodeSnippetsOnFunctionSuggest": {
@@ -1269,4 +1270,4 @@
       ]
     }
   }
-}
+}