Parse min and max parameters

[AlexDo1]

Just as for the json2args and json2aRgs packages, the function getParameters.m must be extended to parse parameters with a min and max value correctly according to the tool specification.

This issue also exists in the tool_template_octave repository: tool-spec/tool_template_octave#3
As the getParameters() function is the same for Matlab and in Octave, getParameters() has to be extended only once and can then be copied over.