Some changes for dev. Block.call() and InlineTool.open()

[VasyaXY]

1. Method call in block can return value
   let ret = editor.blocks.getBlockByIndex(0).call('someMethod', someParams);

2. Method open in inline tool return async to catch when menu open
   editor.inlineToolbar.open().then(() => {
   console.log('+++ inline opened');
   });

1__In_Block_method_call_is_can_return_value_now__2__Method_open_in_inline_tool_return_asyn.patch