Initial import with modified Dockerfile for env-based config generation

internal/notifier/notifier.go

@@ -0,0 +1,17 @@
+package notifier
+
+import (
+	"context"
+
+	"github.com/vincentc-afk/gitea-notification-hub/internal/event"
+)
+
+// Notifier defines the interface for sending notifications
+// This abstraction allows for different notification providers (Slack, Teams, Discord, etc.)
+type Notifier interface {
+	// SendDirect sends a direct message to a user
+	SendDirect(ctx context.Context, userID string, msg *event.Notification) error
+
+	// SendChannel sends a message to a channel
+	SendChannel(ctx context.Context, channel string, msg *event.Notification) error
+}