HTML & LESS grammar injections

This Visual Studio Code extension enables syntax hightlighting for HTML in template strings (backticks "``") in php, html, js and vue files.

Also for LESS in template blocks in HTML and PHP files.

• Grammar injection for html templates in backtick quoted strings in JS files.
• Grammar injection for html templates in backtick quoted strings in PHP files.
• Grammar injection for LESS language in style tags with type attribute set to text/less. Ex: <style type="text/less"></style>
• Grammar injection for LESS language in style tags with lang attribute set to less. Ex: <style lang="less"></style>