Timeliner: add VersionableInterface superclass

This adds `interfaces.configuration.VersionableInterface` as a
superclass to `TimelinerInterface` in order to be consistent with other
versioned interfaces such as `PluginInterface`.

Author: dgmcdona

volatility3/framework/plugins/timeliner.py

@@ -25,10 +25,14 @@ class TimeLinerType(enum.IntEnum):
     CHANGED = 4
 
 
-class TimeLinerInterface(metaclass=abc.ABCMeta):
+class TimeLinerInterface(
+    interfaces.configuration.VersionableInterface, metaclass=abc.ABCMeta
+):
     """Interface defining methods that timeliner will use to generate a body
     file."""
 
+    _version = (1, 0, 0)
+
     @abc.abstractmethod
     def generate_timeline(
         self,