numerics: add RPL_WHOISSERVICE (#80)

Ref: https://github.com/oftc/oftc-hybrid/blob/2e8b41fae486ca54c02d0d2dfff0bf239447622c/include/numeric.h#L206

Author: emersion

_data/numerics.yaml

@@ -1406,6 +1406,13 @@ values:
         contact: "mailto:[email protected]"
         conflict: true
 
+    -
+        name: RPL_WHOISSERVICE
+        numeric: "309"
+        origin: oftc-hybrid
+        comment: Reply to WHOIS - Client is a Network Service
+        conflict: true
+
     -
         name: RPL_WHOISSVCMSG
         numeric: "310"