feat: provide Kotlin API for db connections

Author: worstell

examples/kotlin/pom.xml

@@ -34,6 +34,11 @@
             <artifactId>ftl-runtime</artifactId>
             <version>${ftl.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+            <version>42.7.1</version>
+        </dependency>
     </dependencies>
 
     <build>