feat(section): Add #path and #fullPath for sections

providers/yaml/src/main/java/cc/carm/lib/configuration/source/yaml/YAMLSource.java

@@ -56,7 +56,7 @@ public class YAMLSource
 
     @Override
     protected @NotNull YAMLSource self() {
-        return null;
+        return this;
     }
 
     @Override

providers/yaml/src/test/java/yaml/test/YamlTests.java

@@ -9,7 +9,6 @@ import org.junit.Test;
 
 import java.util.List;
 import java.util.Map;
-import java.util.regex.Pattern;
 
 public class YamlTests {