Add hostingermail-a._domainkey configuration

For tayyab.json

domains/hostingermail-a._domainkey.tayyab.json

@@ -0,0 +1,11 @@
+{
+  "owner": {
+    "username": "Mr-Dev-Loper",
+    "email": "techworldhqofficial@gmail.com"
+  },
+  "records": {
+    "CNAME": {
+      "hostingermail-a._domainkey": "hostingermail-a.dkim.mail.hostinger.com."
+    }
+  }
+}