Expose SubmitOptions via a submit_options block (analogous to configure, etc)

Allows for a topology to be submitted in inactive mode, e.g:

```ruby
class MyTopology < RedStorm
  submit_options do |env|
    set_initial_status TopologyInitialStatus.valueOf('INACTIVE')
  end

  configure 'my_topology' do |env|
    debug true
    ...
  end
```