Feature merge modules

[JPercival]

• Merges the various clinical reasoning implementations into a single cqf-fhir-cr module
• Retires the cql-evaluator name completely
• You should now only need two dependencies to use this project:

  <dependency>
      <groupId>org.opencds.cqf.fhir</groupId>
      <artifactId>cqf-fhir-cr</artifactId>
      <version>3.0.0-PRE6-SNAPSHOT</version>
    </dependency>

And ONE of:

  <dependency>
      <groupId>org.opencds.cqf.fhir</groupId>
      <artifactId>cqf-fhir-jackson</artifactId>
      <version>3.0.0-PRE6-SNAPSHOT</version>
      <type>pom</type>
    </dependency>

OR

  <dependency>
      <groupId>org.opencds.cqf.fhir</groupId>
      <artifactId>cqf-fhir-jaxb</artifactId>
      <version>3.0.0-PRE6-SNAPSHOT</version>
      <type>pom</type>
    </dependency>

The former provides serialization / deserialization of CQL and associated classes via Jackson which should work on all JREs including Android. The latter uses JAXB to do the same and is known to not work on Android. It's primarily maintained for backwards compatibility reasons.