Add kafka dashboard

kafka/README.md

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+# Kafka Monitoring Dashboard - OTLP
+
+## Data Ingestion
+
+### Integrate KEDA with OpenTelemetry Collector
+
+Add the following code to the receiver section of the OpenTelemetry Collector configuration file:
+
+```
+kafkametrics:
+    brokers: <KAFKA_ENDPOINT>  # Ensure this is the correct address
+    protocol_version: 2.0.0
+    scrapers:
+      - brokers
+      - topics
+      - consumers
+```
+
+and ```kafkametrics``` to the list of receivers in metrics/internal.
+
+
+## Dashboard panels
+
+## Variables
+
+- `{{deployment.environment}}`: Development enviroment
+- `{{kafka.cluster.alias}}`: Kafka cluster alias
+
+### Sections
+
+- Broker Metrics
+![Broker Section](assets/broker-section.png)
+  - Broker Count - kafka_brokers
+- Consumer Metrics
+![Consumer Section](assets/consumer-section.png)
+   - Consumer Group Members - kafka_consumer_group_members
+   - Consumer Lag - kafka_consumer_group_lag
+   - Consumer Offset - kafka_consumer_group_offset
+- Topic Metrics
+![Topic Section](assets/topic-section.png)
+  - Topic Count - kafka_topic_partitions
+- Partition Metrics
+![Partition Section](assets/partition-section.png)
+  - Partition Count per Topic - kafka_topic_partitions
+  - Current Offest (Partition) - kafka_partition_current_offset
+  - Oldest Offset (Partition) - kafka_partition_oldest_offset
+  - In-Sync Replicas (ISR) - kafka_partition_replicas_in_sync
+  - Replicas per Partition - kafka_partition_replicas