Add Atmos extension

[jgibbarduk]

Summary

This PR adds the Atmos (https://atmos.tools) extension to the Zed marketplace.

Extension details

• Name: Atmos
• ID: atmos
• Version: 0.3.0
• Repository: https://github.com/jgibbarduk/zed-atmos-extension

Features

• Go-to-definition for imports, component names, metadata.component, metadata.inherits, and !terraform.state references
• Hover tooltips showing resolved imports, accumulated variables, component definitions, and computed stack names from atmos.yaml name_template
• Go template expression resolution ({{ .vars.namespace }}, {{ .atmos_component }}, etc.)
• Rename support for component references across the workspace
• Code actions to generate component scaffolds for missing components
• Completion suggestions for dependency component names, template variables, and import paths
• 20+ diagnostics including unresolvable imports, duplicate components, missing dependencies, unquoted versions, circular imports, invalid backend types, and abstract components with no inheritors

Language server

The extension bundles a Go-based LSP bridge (atmos-lsp-bridge) that handles all LSP methods directly and proxies unsupported methods to the downstream atmos lsp start --transport stdio process.

Checklist

• Tested locally as a dev extension
• Valid open-source LICENSE (MIT)
• No zed / Zed / extension in ID or name
• Extension ID valid (^[a-z0-9\-]+$)
• Grammar repos use HTTPS
• extension.wasm not committed to git
• Cargo.lock committed
• CI workflow exists and passes
• README covers features, install, requirements
• extension.toml has all required fields
• Extension code implements Extension trait
• Binary is NOT bundled inside extension WASM
• WASM target updated to wasm32-wasip2

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[jgibbarduk]

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