feat: HTML node (#5107)

* ✨ Create HTML templating node PoC

* ♻️ Apply feedback

* 🐛 Scope CSS selectors

* ✏️ Adjust description

* ✏️ Adjust placeholder

* ⚡ Replace two custom files with package output

* ➕ Add `codemirror-lang-html-n8n`

* 👕 Appease linter

* 🧪 Skip event bus tests

* ⏪ Revert "Skip event bus tests"

This reverts commit 5702585d0de3b8465660567132e9003e78f1104c.

* ✏️ Update codex

* 🧹 Cleanup

* 🐛 Restore original for `continueOnFail`

* ⚡ Improve `getResolvables`

packages/editor-ui/src/event-bus/html-editor-event-bus.ts

@@ -0,0 +1,3 @@
+import Vue from 'vue';
+
+export const htmlEditorEventBus = new Vue();