feat: support disable bots completely

modules/context/context.go

@@ -799,6 +799,7 @@ func Contexter(ctx context.Context) func(next http.Handler) http.Handler {
 			ctx.Data["EnableOpenIDSignIn"] = setting.Service.EnableOpenIDSignIn
 			ctx.Data["DisableMigrations"] = setting.Repository.DisableMigrations
 			ctx.Data["DisableStars"] = setting.Repository.DisableStars
+			ctx.Data["EnableBots"] = setting.Bots.Enabled
 
 			ctx.Data["ManifestData"] = setting.ManifestData