Add examples to use Single Query Loading.

Query by Id works via the repository.

Query derivation doesn't since it side steps the DataAccessStrategy.

Closes #675

jdbc/pom.xml

@@ -22,6 +22,7 @@
 		<module>immutables</module>
 		<module>jmolecules</module>
 		<module>jooq</module>
+		<module>singlequeryloading</module>
 		<!-- <module>mybatis</module> -->
 		<module>graalvm-native</module>
 	</modules>