Add CLI commands for project scaffolding and internationalization

[Copilot]

User requested CLI commands for creating new projects and managing internationalization. The existing CLI only had code generation and dev server commands.

Commands Added

Project Initialization

• objectql init - Scaffolds projects from templates (basic, express-api, enterprise)
• Options: --skip-install, --skip-git, custom directories
• Converts workspace dependencies to standalone package versions

Metadata Generation

• objectql new <type> <name> - Generates metadata files for 12 types (object, view, form, action, hook, etc.)
• Auto-generates TypeScript stubs for actions/hooks
• Enforces naming conventions and provides smart defaults

Internationalization

• objectql i18n extract - Extracts translatable strings from metadata to JSON
• objectql i18n init <lang> - Initializes new language directories
• objectql i18n validate <lang> - Reports missing translations with key paths

Database Migrations

• objectql migrate create <name> - Creates timestamped migration files with up/down templates
• objectql migrate - Runs pending migrations, tracks in _migrations table
• objectql migrate status - Shows pending vs completed migrations

Usage

# Create new project
objectql init -t express-api -n my-api

# Generate metadata
objectql new object users
objectql new action approve_user  # Creates .yml + .ts

# i18n workflow
objectql i18n extract --lang en
objectql i18n init zh-CN
objectql i18n validate zh-CN

Implementation

New files:

• commands/init.ts - Template copying, dependency conversion
• commands/new.ts - YAML/TS generation from templates
• commands/i18n.ts - Translation extraction via glob + yaml parsing
• commands/migrate.ts - Migration runner with ts-node support

Documentation:

• Updated README with all commands
• Added USAGE_EXAMPLES.md with workflows
• Added IMPLEMENTATION_SUMMARY.md with technical details

Original prompt

帮我规划一下还需要哪些Cli命令，比如创建新项目和国际化

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