Provide description for connector in the catalog

[apupier]

it will allow to provide a description on completion and on hover for connector.class attribute in tooling

For instance, I think that the description should be added in

camel-kafka-connector/camel-kafka-connector-catalog/src/generated/resources/connectors/camel-activemq-sink.json

Lines 2 to 9 in e309308

	"connector": {
	"class": "org.apache.camel.kafkaconnector.activemq.CamelActivemqSinkConnector",
	"artifactId": "camel-activemq-kafka-connector",
	"groupId": "org.apache.camel.kafkaconnector",
	"id": "camel-activemq-sink",
	"type": "sink",
	"version": "0.7.0-SNAPSHOT"
	},

"connector": {
		"class": "org.apache.camel.kafkaconnector.activemq.CamelActivemqSinkConnector",
		"artifactId": "camel-activemq-kafka-connector",
		"groupId": "org.apache.camel.kafkaconnector",
		"id": "camel-activemq-sink",
		"type": "sink",
		"version": "0.7.0-SNAPSHOT",
		"description": "<the description>"
	}

It means to add a description field with getters on CamelKafkaConnectorModel.

need to determine from where the description can be picked up.

[apupier]

looking to provide a Pull Request

[apupier]

the description is directly picked up from the normal Camel Catalog.