feat(kubernetes): added base class K8SEdgeBuilder (#3530)

* added base class K8SEdgeBuilder

* added example in find_connection description

* change method signature to return a list

* remove type from method signature

* added line space for linter

checkov/kubernetes/graph_builder/graph_components/K8SEdgeBuilder.py

@@ -0,0 +1,25 @@
+from __future__ import annotations
+from abc import abstractmethod
+
+from checkov.kubernetes.graph_builder.graph_components.blocks import KubernetesBlock
+
+
+class K8SEdgeBuilder:
+
+    @abstractmethod
+    def should_search_for_edges(self, vertex: KubernetesBlock) -> bool:
+        """
+        implementation should examine vertex's attributes and indicate if it's potentially
+        suitable for the concrete class's edge type.
+        e.g: search for a label attribute in LabelSelectorEdgeBuilder's implementation
+        """
+        raise NotImplementedError
+
+    @abstractmethod
+    def find_connection(self, vertex: KubernetesBlock, vertices: list[KubernetesBlock]) -> list[KubernetesBlock]:
+        """
+        implementation should search in each of the vertices for a possible connection
+        to the vertex param according to the concrete class's rule(s).
+        e.g: find vertices with a label attribute that match current vertex's selector attribute
+        """
+        raise NotImplementedError