weatherfeeder: split the former maximumdirect.net/weatherd project in two.

feedkit now contains a reusable core, while weatherfeeder is a concrete implementation that includes weather-specific functions.

internal/model/forecast.go

@@ -0,0 +1,17 @@
+package model
+
+import "time"
+
+// WeatherForecast identity fields (as you described).
+type WeatherForecast struct {
+	IssuedBy      string    // e.g. "NWS"
+	IssuedAt      time.Time // when forecast product was issued
+	ForecastType  string    // e.g. "hourly", "daily"
+	ForecastStart time.Time // start of the applicable forecast period
+
+	// TODO: You’ll likely want ForecastEnd too.
+
+	// TODO: Add meteorological fields you care about.
+	// Temperature, precip probability, wind, etc.
+	// Decide if you want a single "period" model or an array of periods.
+}