Add option to send mail when connection status change

luci-app-mail/luasrc/model/cbi/mail.lua

@@ -0,0 +1,44 @@
+-- Copyright 2018 Ycarus (Yannick Chabanois) <ycarus@zugaina.org>
+-- Licensed to the public under the Apache License 2.0.
+
+m = Map("mail", translate("Send mail"), translate("Send mail settings"))
+
+s = m:section(TypedSection, "smtp", translate("SMTP"))
+s.anonymous = true
+s.addremove = false
+
+server = s:option(Value, "server", translate("Server"))
+server.datatype = "host"
+server.placeholder = "smtp.gmail.com"
+server.optional = false
+
+port = s:option(Value, "port", translate("Port"))
+port.datatype = "port"
+port.optional = false
+port.rmempty  = true
+port.default = "25"
+
+tls = s:option(Flag, "tls", translate("TLS"))
+tls.rmempty  = false
+
+tls_starttls = s:option(Flag, "tls_starttls", translate("STARTTLS"))
+tls_starttls.rmempty  = false
+
+user = s:option(Value, "user", translate("User"))
+user.rmempty = true
+
+password = s:option(Value, "password", translate("Password"))
+password.password = true
+password.rmempty = true
+
+from = s:option(Value, "from", translate("From"))
+from.optional = false
+from.rmempty = true
+from.placeholder = "myself@gmail.com"
+
+to = s:option(Value, "to", translate("To"))
+to.optional = false
+to.rmempty = true
+to.placeholder = "myself@gmail.com"
+
+return m