Enrichment extension

[PavelJurka]

After a discussion - we would like to extend enrichment object by:

• timestamp, recommended - The timestamp when the enrichment data was generated.
• desc optional - A long description of the enrichment data.
• reputation optional - The reputation of the enrichment data
• short_desc, recommended - A short description of the enrichment data.
• url_string, recommended - The URL of the source of the enrichment data

PR Changes - created_time + src_url