Enhancement Proposal (Provisional): Data Plane Dynamic Configuration (#931)

New enhancement proposal for dynamic data plane configuration for the NGF project.

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Co-authored-by: Saylor Berman <s.berman@f5.com>

Author: mpstefan

docs/proposals/data-plane-config.md

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+# Enhancement Proposal-929: Data Plane Dynamic Configuration
+
+- Issue: https://github.com/nginxinc/nginx-kubernetes-gateway/issues/929
+- Status: Provisional
+
+## Summary
+
+This proposal is intended to contain the design for how to dynamically configure the data plane for the
+NGINX Gateway Fabric (NGF) project. Similar to control plane configuration, we should be able to leverage
+a custom resource definition to define data plane configuration, considering fields such as telemetry and
+upstream zone size.
+
+## Goals
+
+Define a CRD to dynamically configure various settings for the NGF data plane. The initial configurable options
+will be for telemetry (tracing) and upstream zone size.
+
+## Non-Goals
+
+ 1. This proposal is not defining every setting that needs to be present in the configuration.
+ 2. This proposal is not for any configuration related to control plane.