doc: add weechat protocol in relay plugin

doc/de/weechat_user.de.txt

@@ -1843,9 +1843,13 @@ Relay Erweiterung
 ~~~~~~~~~~~~~~~~~
 
 Die Relay-Erweiterung wird genutzt um Daten, mittels unterschiedlicher Protokolle,
-über ein Netzwerk zu übermitteln.
+über ein Netzwerk zu übermitteln:
 
-Zur Zeit wird ausschließlich das "IRC" Protokoll unterstützt (IRC Proxy).
+// TRANSLATION MISSING
+* 'irc': IRC proxy: used to share connections to IRC servers with one or many
+  other IRC clients
+* 'weechat': protocol used by remote interfaces to display and interact with
+  WeeChat (for example QWeeChat)
 
 [[relay_options]]
 Optionen (relay.conf)
@@ -1882,6 +1886,23 @@ Die Anzahl an erlaubten Clients kann limitiert werden:
 /set relay.network.max_clients 1
 ----------------------------------------
 
+// TRANSLATION MISSING
+[[relay_weechat_protocol]]
+WeeChat protocol
+^^^^^^^^^^^^^^^^
+
+The Relay plugin can send data to remote interface using WeeChat protocol.
+
+For example:
+
+----------------------------------------
+/set relay.network.password "mypass"
+/relay add weechat.* 9000
+----------------------------------------
+
+Now you can connect on port 9000 with a remote interface (like QWeeChat),
+using password "mypass".
+
 [[rmodifier_plugin]]
 Rmodifier Erweiterung
 ~~~~~~~~~~~~~~~~~~~~~

doc/en/weechat_user.en.txt

@@ -1816,9 +1816,12 @@ You'll have following files:
 Relay plugin
 ~~~~~~~~~~~~
 
-The Relay plugin is used to relay data via network, using different protocols.
+The Relay plugin is used to relay data via network, using different protocols:
 
-Currently, only "irc" protocol is supported (IRC proxy).
+* 'irc': IRC proxy: used to share connections to IRC servers with one or many
+  other IRC clients
+* 'weechat': protocol used by remote interfaces to display and interact with
+  WeeChat (for example QWeeChat)
 
 [[relay_options]]
 Options (relay.conf)
@@ -1855,6 +1858,22 @@ You can limit number of allowed clients:
 /set relay.network.max_clients 1
 ----------------------------------------
 
+[[relay_weechat_protocol]]
+WeeChat protocol
+^^^^^^^^^^^^^^^^
+
+The Relay plugin can send data to remote interface using WeeChat protocol.
+
+For example:
+
+----------------------------------------
+/set relay.network.password "mypass"
+/relay add weechat.* 9000
+----------------------------------------
+
+Now you can connect on port 9000 with a remote interface (like QWeeChat),
+using password "mypass".
+
 [[rmodifier_plugin]]
 Rmodifier plugin
 ~~~~~~~~~~~~~~~~

doc/fr/weechat_user.fr.txt

@@ -1868,9 +1868,12 @@ Extension Relay
 ~~~~~~~~~~~~~~~
 
 L'extension Relay est utilisée pour relayer des données via le réseau, en
-utilisant divers protocoles.
+utilisant divers protocoles :
 
-Actuellement, seul le protocole "irc" est supporté (proxy IRC).
+* 'irc' : proxy IRC : utilisé pour partager la connexions aux serveurs IRC avec
+  un ou plusieurs autres clients IRC
+* 'weechat' : protocole utilisé par les interfaces distantes (par exemple
+  QWeeChat).
 
 [[relay_options]]
 Options (relay.conf)
@@ -1908,6 +1911,23 @@ Vous pouvez limiter le nombre de clients autorisés :
 /set relay.network.max_clients 1
 ----------------------------------------
 
+[[relay_weechat_protocol]]
+WeeChat protocol
+^^^^^^^^^^^^^^^^
+
+L'extension Relay peut envoyer les données à une interface distante en
+utilisant le protocole WeeChat.
+
+Par exemple :
+
+----------------------------------------
+/set relay.network.password "mypass"
+/relay add weechat.* 9000
+----------------------------------------
+
+Maintenant vous pouvez vous connecter sur le port 9000 avec une interface
+distante (comme QWeeChat), en utilisant le mot de passe "mypass".
+
 [[rmodifier_plugin]]
 Extension Rmodifier
 ~~~~~~~~~~~~~~~~~~~

doc/it/weechat_user.it.txt

@@ -1856,9 +1856,13 @@ Plugin Relay
 ~~~~~~~~~~~~
 
 Il plugin Relay viene utilizzato per inoltrare i dati via rete, facendo uso di
-protocolli differenti.
+protocolli differenti:
 
-Al momento, è supportato solo il protocollo "irc" (proxy IRC).
+// TRANSLATION MISSING
+* 'irc': IRC proxy: used to share connections to IRC servers with one or many
+  other IRC clients
+* 'weechat': protocol used by remote interfaces to display and interact with
+  WeeChat (for example QWeeChat)
 
 [[relay_options]]
 Opzioni (relay.conf)
@@ -1895,6 +1899,23 @@ Ora è possibile connettersi sulla porta 8000 con qualsiasi client IRC
 /set relay.network.max_clients 1
 ----------------------------------------
 
+// TRANSLATION MISSING
+[[relay_weechat_protocol]]
+WeeChat protocol
+^^^^^^^^^^^^^^^^
+
+The Relay plugin can send data to remote interface using WeeChat protocol.
+
+For example:
+
+----------------------------------------
+/set relay.network.password "mypass"
+/relay add weechat.* 9000
+----------------------------------------
+
+Now you can connect on port 9000 with a remote interface (like QWeeChat),
+using password "mypass".
+
 [[rmodifier_plugin]]
 Plugin Rmodifier
 ~~~~~~~~~~~~~~~~