Add scraper for lekkerensimpel.com

[danielpalstra]

This PR adds a scraper for dutch recipe site https://lekkerensimpel.com

[jayaddison]

This looks great, thank you @danielpalstra!

An optional request: could you consider adding test coverage on the natural language detection for the scraper?

Example:

recipe-scrapers/tests/test_woolworths.py

Lines 75 to 76 in bb20d6e

	def test_language(self):
	self.assertEqual("en-AU", self.harvester_class.language())

[coveralls]

Coverage decreased (-0.08%) to 95.292% when pulling 40886d0 on danielpalstra:lekkersimpel into bb20d6e on hhursev:main.

[danielpalstra]

@jayaddison I added the language method as requested.

[jayaddison]

Thanks again @danielpalstra - this is now available as part of recipe-scrapers v13.20.0, as published on PyPi.

[danielpalstra]

Thanks again @danielpalstra - this is now available as part of recipe-scrapers v13.20.0, as published on PyPi.

Awesome, thanks!