add support for loading filtered androidx libraries for code completion

langserver/settings.js

@@ -1,6 +1,7 @@
 
 const defaultSettings = {
     appSourceRoot: 'app/src/main',
+    codeCompletionLibraries: [],
     trace: false,
 }
 
@@ -11,6 +12,11 @@ const defaultSettings = {
       */
      appSourceRoot = defaultSettings.appSourceRoot;
 
+     /**
+      * The set of androidx libraries to include in code completion
+      */
+     codeCompletionLibraries = defaultSettings.codeCompletionLibraries;
+
      /**
       * True if we log details
       */