add slack callback file

pkg/interact/slack_callbacks.go

@@ -0,0 +1,27 @@
+// Code generated by "callbackgen -type Slack"; DO NOT EDIT.
+
+package interact
+
+import (
+	"github.com/slack-go/slack/slackevents"
+)
+
+func (s *Slack) OnAuthorized(cb func(userSession *SlackSession)) {
+	s.authorizedCallbacks = append(s.authorizedCallbacks, cb)
+}
+
+func (s *Slack) EmitAuthorized(userSession *SlackSession) {
+	for _, cb := range s.authorizedCallbacks {
+		cb(userSession)
+	}
+}
+
+func (s *Slack) OnEventsApi(cb func(slackevents.EventsAPIEvent)) {
+	s.eventsApiCallbacks = append(s.eventsApiCallbacks, cb)
+}
+
+func (s *Slack) EmitEventsApi(slackevents.EventsAPIEvent) {
+	for _, cb := range s.eventsApiCallbacks {
+		cb()
+	}
+}