Use proper date/datetime detection mechanism using format #182

The standard deal with {"type": "string", "format": "date"} and {"type": "string", "format": "date-time"}. We shouldn't rely on propertyName.

• Standard ref : https://docs.ogc.org/is/23-058r2/23-058r2.html#_examples_2
• Issue ref in ogc-schema-store : collection-schema - improve the list of property types gpf-schema-store#37

Originally posted by @mborne in #179 (comment)