adding custom bits to resources

resources/tools/Library/Default.fctl

@@ -35,7 +35,15 @@
     {
       "nr": 9,
       "path": "5mm-thread-cutter.fctb"
+    },
+    {
+      "nr": 10,
+      "path": "3mm_Endmill.fctb"
+    },
+    {
+      "nr": 11,
+      "path": "bowlbit.fctb"
     }
   ],
   "version": 1
-}
+}