Get all bouquets does not return radio bouquets

[iliessens]

Hi!

I really like the integration and have been using it a lot.

I have a receiver I use for listening to radio stations, but those bouquets are not showed in the Home Assistant config flow.
(I used to have the bouquet specified in YAML, but this seems no longer possible.)

This seems to trace back to the function "get all bouquets", which in fact only returns TV bouquets.

openwebifpy/openwebif/api.py

Lines 500 to 502 in e5a5eed

	async def get_all_bouquets(self) -> dict[str, Any]:
	"""Get list of all bouquets."""
	return await self._call_api(PATH_BOUQUETS)

This in turn calls the OpenWebIf API, that by default returns TV bouquets. There seems to be no option to get both radio and TV channels in one call.
https://github.com/E2OpenPlugins/e2openplugin-OpenWebif/wiki/OpenWebif-API-documentation#bouquets

So maybe the best solution is to make two calls and merge the results?