Added weather route and embedded cache system

types/metrics.go

@@ -0,0 +1,11 @@
+package types
+
+// The Metrics data type, representing the humidity, pressure and
+// similar miscellaneous values
+type Metrics struct {
+	Humidity   string `json:"humidity"`
+	Pressure   string `json:"pressure"`
+	DewPoint   string `json:"dewPoint"`
+	UvIndex    int8   `json:"uvIndex"`
+	Visibility string `json:"visibility"`
+}