[DOC] Data Prepper geoip processor documentation

[dlvenable]

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Data Prepper is adding a new geoip processor. We will need this documented in the documentation site.

What other resources are available? Provide links to related issues, POCs, steps for testing, etc.

I plan to create a PR on this.

[vagimeli]

@dlvenable Can we lean on any of this documentation? https://opensearch.org/docs/2.12/ingest-pipelines/processors/ip2geo/

[dlvenable]

@dlvenable Can we lean on any of this documentation? https://opensearch.org/docs/2.12/ingest-pipelines/processors/ip2geo/

@vagimeli , If we want to take any wording on either the concept of IP-based geolocation, or anything about the MaxMind databases, we could use that.

The configurations, setup, and how it works are completely different however.

I have submitted a PR for this - #6772.