[FR] add PineScript support

[Fred-Vatin]

Hi,

Pine Script is TradingView's programming language. It allows traders to create their own trading tools and test them. TradingView is website tool for advanced financial visualisation.

Additional resources
Documentation: https://www.tradingview.com/pine-script-docs/en/v5/sl
VS Code support: https://github.com/frizLabz-FFriZz/Pine-Script-v5-VS-Code

Since shiki can be used with Obsibian via a plugin, it would be a great addition to support this language.