[NL] Add some more sentences to NL Broadcast intent.

[marcelveldt]

Add a few more sentences to the NL/Dutch version of the broadcast intent, these are commonly used on Google Home and Apple Home.

[TheFes]

Hi @marcelveldt Can you add tests for the new sentences as well?

[home-assistant[bot]]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks :+1:

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