Retrieve package name and class name prefix for the code generator in…

… Kotlin from the target enum.

org.lflang/src/org/lflang/generator/LFGenerator.java

@@ -139,23 +139,12 @@ private GeneratorBase createKotlinGenerator(Target target, FileConfig fileConfig
         // play a few tricks here so that Kotlin FileConfig and
         // Kotlin Generator do not appear as an import. Instead we look the
         // class up at runtime and instantiate it if found.
-        String packageName;
-        String classNamePrefix;
-        switch (target) {
-            case CPP: {
-                packageName = "cpp";
-                classNamePrefix = "Cpp";
-                break;
-            }
-            case TS: {
-                packageName = "ts";
-                classNamePrefix = "Ts";
-                break;
-            }
-            default: {
-                throw new RuntimeException("Unexpected target!");
-            }
+        if (target.name().length() < 2) {
+            throw new RuntimeException("Unexpected target!");
         }
+        String packageName = target.name().toLowerCase();
+        String classNamePrefix = target.name().charAt(0)
+            + target.name().substring(1).toLowerCase();
         try {
             return (GeneratorBase) Class
                 .forName("org.lflang.generator." + packageName + "." + classNamePrefix + "Generator")