feat(#250): introduce caseFreeTags option (#251)

* chore: initial tests

* feat: parser test

* feat: add case free tags support

* fix: coverage upload

* fix: --disable=gcov

* fix: npm publish sha commit

* fix: change codecov to coveralls

* fix: change workflow pr build and publish

* chore: change coverage badge [skip ci]

.changeset/poor-pears-marry.md

@@ -0,0 +1,42 @@
+---
+"@bbob/parser": minor
+"@bbob/types": minor
+"@bbob/cli": minor
+"@bbob/core": minor
+"@bbob/html": minor
+"@bbob/plugin-helper": minor
+"@bbob/preset": minor
+"@bbob/preset-html5": minor
+"@bbob/preset-react": minor
+"@bbob/preset-vue": minor
+"@bbob/react": minor
+"@bbob/vue2": minor
+"@bbob/vue3": minor
+---
+
+New option flag `caseFreeTags` has been added
+
+This flag allows to parse case insensitive tags like `[h1]some[/H1]` -> `<h1>some</h1>`
+
+```js
+import html from '@bbob/html'
+import presetHTML5 from '@bbob/preset-html5'
+
+const processed = html(`[h1]some[/H1]`, presetHTML5(), { caseFreeTags: true })
+
+console.log(processed); // <h1>some</h1>
+```
+
+Also now you can pass `caseFreeTags` to `parse` function
+
+```js
+import { parse } from '@bbob/parser'
+
+const ast = parse('[h1]some[/H1]', {
+  caseFreeTags: true
+});
+```
+
+BREAKING CHANGE: `isTokenNested` function now accepts string `tokenValue` instead of `token`
+
+Changed codecov.io to coveralls.io for test coverage