🚀 - Add support for the Svelte language

[fvarano]

Which @codeimage/* package(s) are relevant/releated to the feature request?

config, codeimage

Description

Svelte is not fully supported as of now. It is only marked as a flavor of Javascript.
But this way both syntax highlighting and formatting are not working, while the icon is correctly shown.
I suggest moving it to a separate language and adding the official prettier plugin.

[stale]

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