Is your feature request related to a problem? Please describe.
The event data received may have fields which can be of different format. For example, OTEL logs data contains "Body" field which is a string. The value of this field may contain JSON data or plain text or XML or CSV or Key-Value etc. Need a way to detect the format of the data in a given field
Describe the solution you'd like
Add a new processor format_detector which looks at the content of a given source field and detects the format and stores the format as a string in the event data or metadata

processor:
   - format_detector:
         source:
         # one of the following 2 is a must
         target_key:  (optional)
         target_metadata_key: (optional)
         (other config options as needed)

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A clear and concise description of any alternative solutions or features you've considered.

Additional context
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