feat: Expose CamelContextConfiguration.replaceRouteFromWith(String, String) as API

[apupier]

This would be convenient to replace the deprecated org.apache.camel.test.junit5.AbstractTestSupport.replaceRouteFromWith(String, String)

A workaround avoiding deprecated API is currently to use:

    @Override
    public void configureContext(CamelContextConfiguration
camelContextConfiguration) {
    	super.configureContext(camelContextConfiguration);
    	camelContextConfiguration.fromEndpoints().put(routeId,
"direct:in");
    }

for instance, could be replaced then here https://github.com/apache/camel-examples/blob/218836af4251d9ecb70f18dedb3b2e4511925767/kafka/src/test/java/org/apache/camel/example/kafka/KafkaTest.java#L60-L64

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