Camera Last entity state returned as partial date/time string rather than timestamp

[broomeydj]

Hi.

I am trying to use automation with the Last state entity (this allows for object detection) The state of this sensor is returned as a string in the format 12-13 11:00 (13th December 11:00am) Could the code be updated so that this is returned as an actual date/time value similar to the last_updated attribute.

If this is not possible due to breaking changes then please add an attribute to the entity with the date/time as a timestamp