refactor: move configuration artifact to artifact package

Author: AndreaGiulianelli

src/agt/director.asl

@@ -14,7 +14,7 @@
 !loadConfig.
 
 +!loadConfig
-    <- makeArtifact(configuration, "config.ConfigurationArtifact", [], ConfigurationId);
+    <- makeArtifact(configuration, "artifact.config.ConfigurationArtifact", [], ConfigurationId);
        focus(ConfigurationId);
        load.
 

src/env/config/ConfigurationArtifact.java renamed to src/env/artifact/config/ConfigurationArtifact.java

@@ -6,7 +6,7 @@
  * https://opensource.org/licenses/MIT.
  */
 
-package config;
+package artifact.config;
 
 import cartago.Artifact;
 import cartago.OPERATION;