Add Duration support for Data Prepper Configuration using PluginDurationDeserializer

[asifsmohammed]

Is your feature request related to a problem? Please describe.
Currently, only piplelines.yaml can be deserialized using PluginDurationDeserializer. It doesn't allow DataPrepperConfiguration to use Duration.

Describe the solution you'd like
One solution I could think of is make PluginDurationDeserializer a generic class instead of just for plugins and make it public. We can configure the object mapper of DataPrepperAppConfiguration here with custom deserializer.

[dlvenable]

Additionally, this can formalize the concept of a "Data Prepper duration". This is an input string that can be in the format of either an ISO-8601 string or expressed as "Ns" or "Nms" for a specified second or millisecond value.

[asifsmohammed]

Fixed as part of #1757