fix(289): contextFreeTags closing tag bug (#290)

* feat: add tests

* fix: parsing context free

* refactor: code style

* chore: add changeset

* fix: disable coveralls

.changeset/slimy-colts-drive.md

@@ -0,0 +1,20 @@
+---
+"@bbob/plugin-helper": patch
+"@bbob/preset-html5": patch
+"@bbob/preset-react": patch
+"@bbob/preset-vue": patch
+"@bbob/parser": patch
+"@bbob/preset": patch
+"@bbob/react": patch
+"@bbob/types": patch
+"@bbob/core": patch
+"@bbob/html": patch
+"@bbob/vue2": patch
+"@bbob/vue3": patch
+"@bbob/cli": patch
+---
+
+fixes problem with context free tags
+
+now code like `[code][codeButton]text[/codeButton][/code]` 
+will be parsed correctly to `<code>[codeButton]text[/codeButton]</code>`