Add CLI for real-time workflow statistics monitoring with filtering

[Copilot]

Adds CLI tool to monitor workflow statistics in real-time with parameter-based filtering.

Implementation

• CLI Command (liteflow stats): Displays workflow metrics (total, completed, pending, failed, avg steps), most frequent steps, and optional detailed workflow list
• Real-time Mode (--watch): Auto-refreshes dashboard at configurable intervals (default 2s)
• Filters: Status (--status), identifier key/value (--key/--value), verbose mode (--verbose)
• Output: Formatted tables with color-coded status indicators (green/yellow/red)

Usage

# Basic dashboard
liteflow stats --db ./workflows.db

# Real-time monitoring with filters
liteflow stats --db ./workflows.db --watch --status pending --verbose

# Filter by identifier
liteflow stats --db ./workflows.db --key userId --value 1001

Technical Details

• Dependencies: commander (CLI framework), chalk (colors), cli-table3 (tables)
• Bin entry: dist/cli.js added to package.json
• Test coverage: 7 new CLI tests, all existing tests passing
• No security vulnerabilities in new dependencies

Original prompt

Cli üzerinden genel istatistiklerin takip edilebileceği bir altyapı ekle. Realtime takip ve parametrelerle filtreleme seçenekleri olabilir

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