Move IRCv3 server-time code in to it's own module, save last @time tag

modules/line_handler/ircv3.py

@@ -10,7 +10,6 @@ CAPABILITIES = [
     utils.irc.Capability("away-notify"),
     utils.irc.Capability("userhost-in-names"),
     utils.irc.Capability("message-tags", "draft/message-tags-0.2"),
-    utils.irc.Capability("server-time"),
     utils.irc.Capability("cap-notify"),
     utils.irc.Capability("batch"),
     utils.irc.Capability("echo-message"),

modules/server_time.py

@@ -0,0 +1,17 @@
+from src import ModuleManager, utils
+
+CAP = utils.irc.Capability("server-time")
+TAG = utils.irc.MessageTag("time")
+
+class Module(ModuleManager.BaseModule):
+    @utils.hook("received.cap.ls")
+    @utils.hook("received.cap.new")
+    def on_cap(self, event):
+        if CAP.available(event["capabilities"]):
+            return CAP.copy()
+
+    @utils.hook("raw.received")
+    def raw_recv(self, event):
+        server_time = TAG.get_value(event["line"].tags)
+        if not server_time == None:
+            event["server"].set_setting("last-server-time", server_time)