refactor: remove pocketbase (#1138)

app/hook/hook.go

@@ -0,0 +1,17 @@
+package hook
+
+import "context"
+
+type Hook struct {
+	subscribers []func(ctx context.Context, table string, record any)
+}
+
+func (h *Hook) Publish(ctx context.Context, table string, record any) {
+	for _, subscriber := range h.subscribers {
+		subscriber(ctx, table, record)
+	}
+}
+
+func (h *Hook) Subscribe(fn func(ctx context.Context, table string, record any)) {
+	h.subscribers = append(h.subscribers, fn)
+}