Add Halloween Night theme

[BlueRexPY]

Description

Ported Halloween Night theme from VS Code to Zed.

Checklist

• Tested locally as a dev extension
• License is MIT (accepted)
• Extension ID is unique: halloween-night-theme
• Extension ID is suffixed with -theme
• Only includes theme-related resources
• No custom Rust/WASM code (theme-only extension)

Links

• Source repository
• Original VS Code theme

[cla-bot]

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[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Adds the halloween-night-theme extension to the repository as a Git submodule and registers it in the extensions manifest so it can be tracked/versioned alongside other extensions.

Changes:

• Added extensions/halloween-night-theme as a submodule pinned to a specific commit
• Registered the new extension in extensions.toml with its submodule path and initial version
• Added the corresponding .gitmodules entry pointing to the upstream GitHub repository

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
extensions/halloween-night-theme	Adds the gitlink entry for the new submodule (pins to a commit).
extensions.toml	Registers halloween-night-theme in the extensions list with version and submodule path.
.gitmodules	Declares the new submodule path and upstream URL.

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[BlueRexPY]

@cla-bot check

[cla-bot]

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