feat: Add Camel route steps

[christophd]

Fixes #30

PR enables us to create Camel routes as part of the test.

Given Camel route hello.groovy
    """
    from("direct:hello")
     .to("log:dev.yaks.testing.camel?level=INFO")
     .split(body().tokenize(" "))
       .to("seda:tokens")
     .end()
    """

Right now supports XML and Groovy route definitions. In future we might want to reuse the camel-k-runtime route loader implementations for all languages (Yaml, Groovy, JavaScript, ...).

But before we can do that we need to align the same Camel versions (CamelK runtime uses 3.0.0.M3, Citrus 2.21.1)