Check for forbidden characters in attributes

[danielhuppmann]

Issue IAMconsortium/common-definitions#133 identified a problem where tags in code-attributes (description in that case) were not replaced because they were not misplaced.

We already have a validation of stray tags in code-names, see

nomenclature/nomenclature/codelist.py

Line 48 in 9314fef

def check_stray_tag(cls, v: Dict[str, Code]) -> Dict[str, Code]:

It would be very helpful to extend that test to all attributes that are (lists of) strings and also guard against other problematic characters, like ", :, ;.

FYI @phackstock @orichters