Add rule loader and dependencies

Co-Authored-By: Justin Ibarra <brokensound77@users.noreply.github.com>

detection_rules/semver.py

@@ -0,0 +1,25 @@
+# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+# or more contributor license agreements. Licensed under the Elastic License;
+# you may not use this file except in compliance with the Elastic License.
+
+"""Helper functionality for comparing semantic versions."""
+import re
+
+
+class Version(tuple):
+
+    def __new__(cls, version):
+        if not isinstance(version, (int, list, tuple)):
+            version = tuple(int(a) if a.isdigit() else a for a in re.split(r'[.-]', version))
+
+        return tuple.__new__(cls, version)
+
+    def bump(self):
+        """Increment the version."""
+        versions = list(self)
+        versions[-1] += 1
+        return Version(versions)
+
+    def __str__(self):
+        """Convert back to a string."""
+        return ".".join(str(dig) for dig in self)