Add Hoon extension

[TisaneFruitRouge]

Adds a language extension for Hoon, the language used by Urbit.

• Extension ID: hoon
• Repository: https://github.com/TisaneFruitRouge/hoon-zed
• License: MIT

Features

• .hoon file association
• :: line comments
• Bracket matching / autoclose for {}, [], (), "", ''
• Tree-sitter syntax highlighting via urbit-pilled/tree-sitter-hoon

Notes

• Ported from the existing famousj/hoon-vscode VSCode extension. The VSCode extension uses TextMate grammar; this Zed extension uses an existing Tree-sitter grammar that fits Zed's architecture.
• No language server is bundled. The hoon-language-server used by the VSCode extension talks to a running Urbit ship over HTTP rather than stdio, so it does not fit Zed's LSP launch model.
• Tested locally as a dev extension on .hoon files.

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[TisaneFruitRouge]

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