add elon handle rule

rules/identity/elon_handle.sml

···
+Import(
+  rules=[
+    'models/base.sml',
+    'models/identity.sml',
+  ],
+)
+
+_Gate = RegexMatch(target=IdentityEventHandle, pattern=r'^elon-?(musk|reeves).+\.bsky\.social$')
+
+ElonHandleRule = Rule(
+  when_all=[_Gate],
+  description='Likely Elon spam handle',
+)
+
+WhenRules(
+  rules_any=[ElonHandleRule],
+  then=[
+    AtprotoLabel(
+      entity=UserId,
+      label='elon-handle',
+      comment='Lihkely Elon spam handle',
+      expiration_in_hours=None,
+    ),
+  ],
+)

rules/identity/index.sml

···
 )
 
 Require(rule='rules/identity/update_handle.sml')
+Require(rule='rules/identity/elon_handle.sml')