Add way of getting custom model replacements like FindSoundReplacementSample() #71
Description
Add way of getting custom model replacements analog to FindSoundReplacementSample().
For example:
string FindModelReplacement(CBaseEntity@ pEntity, const string& in szModelName) const
Finds the model replacement file/path for the given entity and model. If the the model is replaced, it will return the replacement model file/path instead. Otherwise, szModelName is returned.