First draft of storage APIs (#122)

* First draft of storage APIs

* bumped pxt-core

* using fixed instances to seprate temp from permanent

* send console to storage

* sim support

* missing sim stubs

* adding storage blocks

* more sim support

* remove storage from default package

* fix rendering of ms

* render raw ms

* slize at better place

* duplicate bundled dir

* refactor limit

* simplify limit logic

libs/core/enums.d.ts

@@ -1,6 +1,17 @@
 // Auto-generated. Do not edit.
 
 
+    /**
+     * Mode for lseek()
+     */
+
+    declare const enum SeekWhence {
+    Set = 0,
+    Current = 1,
+    End = 2,
+    }
+
+
     /**
      * Drawing modes
      */