feat: add ru_inn method to __init__

Author: TheDrunkenBear

src/validators/__init__.py

@@ -23,6 +23,7 @@
     fr_ssn,
     ind_aadhar,
     ind_pan,
+    ru_inn
 )
 from .iban import iban
 from .ip_address import ipv4, ipv6
@@ -89,6 +90,7 @@
     "fr_ssn",
     "ind_aadhar",
     "ind_pan",
+    "ru_inn",
     # ...
     "iban",
     # ip_addresses