Remove the default load-from-file behavior from the Abacus core.

src/main/java/org/nwapw/abacus/config/Configuration.java

@@ -85,6 +85,15 @@ public class Configuration {
         }
     }
 
+    /**
+     * Gets the value of this configuration as a string.
+     *
+     * @return the string that represents this configuration.
+     */
+    public String asTomlString(){
+        return TOML_WRITER.write(this);
+    }
+
     /**
      * Gets the number implementation from this configuration.
      *