Add configurable report module composition

internal/module/module.go

@@ -137,7 +137,9 @@ type DerivedDaypartSummariesOptions struct{}
 type HourlyTableOptions struct{}
 type PrecipTimingOptions struct{}
 type AlertDigestOptions struct{}
-type AreaForecastDiscussionOptions struct{}
+type AreaForecastDiscussionOptions struct {
+	Sections []string `json:"sections,omitempty" yaml:"sections,omitempty"`
+}
 type WeatherStoryOptions struct{}
 type ForecastDeltaOptions struct{}
 type OutdoorWindowsOptions struct{}