Added Kafka Source Kamelet

docs/modules/ROOT/nav.adoc

@@ -5,6 +5,7 @@
 * xref:ROOT:bitcoin-source.adoc[image:kamelets/bitcoin-source.svg[] Bitcoin Source]
 * xref:ROOT:http-source.adoc[image:kamelets/http-source.svg[] HTTP Source]
 * xref:ROOT:jira-source.adoc[image:kamelets/jira-source.svg[] Jira Source]
+* xref:ROOT:kafka-source.adoc[image:kamelets/kafka-source.svg[] Kafka Source]
 * xref:ROOT:mail-imap-source.adoc[image:kamelets/mail-imap-source.svg[] Mail IMAP Source]
 * xref:ROOT:minio-source.adoc[image:kamelets/minio-source.svg[] Minio Source]
 * xref:ROOT:mqtt-source.adoc[image:kamelets/mqtt-source.svg[] MQTT Source]

docs/modules/ROOT/pages/kafka-source.adoc

@@ -0,0 +1,62 @@
+// THIS FILE IS AUTOMATICALLY GENERATED: DO NOT EDIT
+= image:kamelets/kafka-source.svg[] Kafka Source
+
+*Provided by: "Apache Software Foundation"*
+
+Receive data from Kafka topics.
+
+== Configuration Options
+
+The following table summarizes the configuration options available for the `kafka-source` Kamelet:
+[width="100%",cols="2,^2,3,^2,^2,^3",options="header"]
+|===
+| Property| Name| Description| Type| Default| Example
+| *brokers {empty}* *| Brokers| Comma separated list of Kafka Broker URLs| string| | 
+| *topic {empty}* *| Topic names| Comma separated list of Kafka topic names| string| | 
+|===
+
+NOTE: Fields marked with ({empty}*) are mandatory.
+
+== Usage
+
+This section summarizes how the `kafka-source` can be used in various contexts.
+
+=== Knative Source
+
+The `kafka-source` Kamelet can be used as Knative source by binding it to a Knative object.
+
+.kafka-source-binding.yaml
+[source,yaml]
+----
+apiVersion: camel.apache.org/v1alpha1
+kind: KameletBinding
+metadata:
+  name: kafka-source-binding
+spec:
+  source:
+    ref:
+      kind: Kamelet
+      apiVersion: camel.apache.org/v1alpha1
+      name: kafka-source
+    properties:
+      brokers: "The Brokers"
+      topic: "The Topic names"
+  sink:
+    ref:
+      kind: InMemoryChannel
+      apiVersion: messaging.knative.dev/v1
+      name: mychannel
+
+----
+
+Make sure you have xref:latest@camel-k::installation/installation.adoc[Camel K installed] into the Kubernetes cluster you're connected to.
+
+Save the `kafka-source-binding.yaml` file into your hard drive, then configure it according to your needs.
+
+You can run the source using the following command:
+
+[source,shell]
+----
+kubectl apply -f kafka-source-binding.yaml
+----
+// THIS FILE IS AUTOMATICALLY GENERATED: DO NOT EDIT