refactor(syntax): Use a YAML file to generate the final syntax

[Princesseuh]

Changes

Inspired by Svelte's language-tools, this moves our syntax file to a yaml file that is then converted to JSON for publishing.

This has a lot of benefits:

• Much easier to author
• Much easier to read
• Allow us to use real comments

We kept the exact same feature set while using half as much lines

Fix #459

Testing

Updated snapshots to account for the changes

Docs

N/A

[changeset-bot]

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Latest commit: 8513a98

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[matthewp]

lgtm

[lildude]

👋 from GitHub's Linguist library which uses this grammar for syntax highlighting of Astro files on GitHub.com.

This PR has removed the packages/vscode/syntaxes/astro.tmLanguage.json file and hasn't replaced it with a version GitHub can use so we can no longer update the submodule to pull in your grammar changes.

[Princesseuh]

Hello! I'll add the built file to the repo as well. Sorry for the inconvenience!

[Princesseuh]

👋 from GitHub's Linguist library which uses this grammar for syntax highlighting of Astro files on GitHub.com.

This PR has removed the packages/vscode/syntaxes/astro.tmLanguage.json file and hasn't replaced it with a version GitHub can use so we can no longer update the submodule to pull in your grammar changes.

Fixed, sorry again for the inconvenience!

[lildude]

🎉 Perfect! Thanks for the quick fix.