I18n improvements

[joaquimrocha]

Summary

This PR adds a couple of tools to improve the experience for translators.
It adds a couple of top level commands:
npm run i18n:status -> prints progress bars for each locale
npm run i18n:list -> lists locales and the percentage of completion

Also moves the former copy/missing translation commands to this top level variant (check docs).

Also adds docs.

How to test

Check the docs and run the commands to test them out.

[skoeva]

Is the failing CI a bug? Can't reproduce locally

Also unable to test the commands locally:

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: joaquimrocha

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• OWNERS [joaquimrocha]

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[joaquimrocha]

@skoeva , CI is fine now.

[ashu8912]

Is the failing CI a bug? Can't reproduce locally

Also unable to test the commands locally:

@joaquimrocha the comment from @skoeva about ts-node Permission denied, I got sh: ts-node: command not found
I did try npm i but the error still comes up when i try to run npm run i18n:status

[Copilot]

Pull request overview

This PR introduces a new TypeScript-based i18n tool to improve the translator experience for Headlamp. It provides a unified command-line interface for managing translations with status views, file listings, extraction of empty translations, and copying translations between files.

• Adds a new TypeScript tool in tools/i18n/ with comprehensive test coverage
• Introduces top-level npm commands (i18n:status, i18n:list, i18n:extract, i18n:copy)
• Deprecates old JavaScript tools in frontend/src/i18n/tools/
• Adds extensive documentation for translators and developers

Reviewed changes

Copilot reviewed 19 out of 20 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tools/i18n/package.json	Defines the new i18n tool package with dependencies and npm scripts
tools/i18n/package-lock.json	Lock file for the new tool's dependencies
tools/i18n/tsconfig.json	TypeScript configuration for the i18n tool
tools/i18n/jest.config.js	Jest test configuration with coverage settings
tools/i18n/src/index.ts	Main CLI entry point using yargs for command parsing
tools/i18n/src/lib/types.ts	TypeScript type definitions for translations and stats
tools/i18n/src/lib/translations.ts	Core translation file operations (load, save, count, copy, extract)
tools/i18n/src/lib/stats.ts	Translation statistics and progress visualization
tools/i18n/src/lib/paths.ts	Path resolution utilities for finding project root and locales
tools/i18n/src/lib/colors.ts	Terminal color utilities for output formatting
tools/i18n/src/lib/commands.ts	Implementation of all CLI commands (status, list, extract, copy)
tools/i18n/test/translations.test.ts	Comprehensive integration tests for translation operations
tools/i18n/test/.gitignore	Ignores test artifacts and coverage reports
tools/i18n/README.md	Developer documentation for the tool
package.json	Adds top-level npm scripts for i18n commands
frontend/src/i18n/README.md	Updated with new command references and translator guidance
frontend/src/i18n/tools/extract-empty-translations.js	Marked as deprecated with migration notice
frontend/src/i18n/tools/copy-translations.js	Marked as deprecated with migration notice
docs/development/i18n/contributing.md	Comprehensive update for translators with new workflow and commands
app/electron/i18next-parser.config.js	Bug fix: changed namespaceSeparator to false

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