[RF] Implement checking of parameter ranges

[hageboeck]

Explain what you would like to see improved

Since a while, RooFit can check if parameters are defined with a mathematically allowed range.

root/roofit/roofit/src/RooGaussian.cxx

Lines 42 to 44 in c8e050d

	{
	RooHelpers::checkRangeOfParameters(this, {&_sigma}, 0);
	}

This should be implemented for all PDFs where we know that the definition range of the parameters is less than [-inf, inf].