Merge branch 'add-ws-relay-config' into 'master'

Add new example config to demonstrate use of VILLASweb

See merge request acs/public/villas/VILLASnode!53

etc/examples/villas-web.conf

+nodes = {
+	sine = {
+		type = "signal"
+		
+		signal = "mixed"
+		values = 5
+		rate = 25
+		frequency = 5
+	}
+
+	web = {
+		type = "websocket"
+
+		destinations = [
+			"https://web.villas.fein-aachen.org//ws/relay/test_data_1"
+		]
+	}
+}
+
+paths = (
+	{
+		in = "sine"
+		out = "web"
+	}
+)
+