Add support for common resolvers

[roneli]

Add support for common resolvers from strings

• IP Resolver
• INET resolver
• Mac resolver
• UUID resolver
• Datetime Resolver
• Date Resolver
• Add Type Transforms String -> Int, int -> String etc'

[roneli]

func parseISODate(d string) (*time.Time, error) { if d == "" { return nil, nil } location, err := time.LoadLocation("UTC") if err != nil { return nil, err } date, err := time.ParseInLocation(time.RFC3339, d, location) if err != nil { return nil, err } return &date, err }

Example for ParseISODate, should be more generic and pass RFCs as second var if no RFCs are passed we can use default RFC3339