chore: Plugin registration (#6623)

* first pass

* test

* test

* priority

* Reduce boilerplate further

* Update server/utils/PluginManager.ts

Co-authored-by: Apoorv Mishra <apoorvmishra101092@gmail.com>

* fix: matchesNode error in destroyed editor transaction

* fix: Individual imported files do not display source correctly in 'Insights'

* chore: Add sleep before Slack notification

* docs

* fix: Error logged about missing plugin.json

* Remove email template glob

---------

Co-authored-by: Apoorv Mishra <apoorvmishra101092@gmail.com>

plugins/iframely/server/index.ts

@@ -0,0 +1,15 @@
+import {
+  PluginManager,
+  PluginPriority,
+  PluginType,
+} from "@server/utils/PluginManager";
+import env from "./env";
+import Iframely from "./iframely";
+
+PluginManager.register(PluginType.UnfurlProvider, Iframely.get, {
+  id: "iframely",
+  enabled: !!env.IFRAMELY_API_KEY && !!env.IFRAMELY_URL,
+
+  // Make sure this is last in the stack to be evaluated after all other unfurl providers
+  priority: PluginPriority.VeryLow,
+});