Create Client side metrics

[fosky94]

Description

Added a new sample code to log client side metrics and traces for redis. this will be added to the public docs once this sample code is posted

client libraries that need to be installed:

pip install redis opentelemetry-api opentelemetry-sdk opentelemetry-instrumentation-redis opentelemetry-exporter-gcp-trace opentelemetry-exporter-gcp-monitoring

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[gemini-code-assist]

Code Review

This pull request introduces a Python script for monitoring Redis client-side metrics and tracing using OpenTelemetry, specifically targeting Google Cloud Trace and Monitoring. It includes a wrapper function, smart_redis_call, designed to handle retries and measure various latency metrics. The review feedback identifies two significant areas for improvement: the removal of redundant connection pool operations that introduce unnecessary overhead and latency, and the correction of a misleading 'application blocking latency' metric that uses an expensive and unrepresentative string conversion of the Redis response.

[fosky94]

added CLA and solved comments