Add support for Scriggo template in text editors

[zapateo]

Add support for Scriggo template in text editors.

Editors to consider:

• GoLand
• Visual Studio Code (Codium, etc..)

Note that we already have a syntax highlighter for highlight.js that can be used as a starting point for implementing the editor's extensions.

[zapateo]

For Visual Studio Code we may base our extension of Better Jinja.

[zapateo]

To make text editors recognize a Scriggo template, take a look this issue.