Remove "final" modifier from picocli option fields.

Fields for picocli options can not have the "final" modifier. The java
compiler might inline the values at compile time and loaded values from
the command line would not be used.

src/main/java/com/l2jserver/cli/command/BuildCommand.java

@@ -47,23 +47,23 @@ public class BuildCommand extends AbstractCommand {
 		"--login-directory",
 		"-lsdir"
 	}, defaultValue = DEFAULT_LOGIN_SOURCE_DIR, description = "Login directory")
-	private final String loginDirectory = DEFAULT_LOGIN_SOURCE_DIR;
+	private String loginDirectory = DEFAULT_LOGIN_SOURCE_DIR;
 	@Option(names = {
 		"--game-directory",
 		"-gsdir"
 	}, defaultValue = DEFAULT_GAME_SOURCE_DIR, description = "Game directory")
-	private final String gameDirectory = DEFAULT_GAME_SOURCE_DIR;
+	private String gameDirectory = DEFAULT_GAME_SOURCE_DIR;
 	@Option(names = {
 		"--datapack-directory",
 		"-dpdir"
 	}, defaultValue = DEFAULT_DATAPACK_SOURCE_DIR, description = "DataPack directory")
-	private final String datapackDirectory = DEFAULT_DATAPACK_SOURCE_DIR;
+	private String datapackDirectory = DEFAULT_DATAPACK_SOURCE_DIR;
 	
 	@Option(names = {
 		"--skip-tests",
 		"-st"
 	}, defaultValue = "true", description = "Skip Tests")
-	private final boolean skipTests = true;
+	private boolean skipTests = true;
 	
 	@Override
 	public void run() {