Create flags2.js

[Rsc2414]

Summary

This pull request introduces an advanced and modular feature flag CLI tool inspired by the existing implementation. The motivation is to modernize the script with:

• Cleaner modular flag loading via --modules
• Multiple output formats (table, json)
• Filtered flag viewing with --filter
• CSV export with --csv
• Easier extensibility for future environments or plugins

This solves the problem of limited flexibility and output customization in the previous version.

How did you test this change?

• Ran yarn to install dependencies.
• Verified CLI outputs using:
  • node flags.js --view table
  • node flags.js --view json
  • node flags.js --filter useMemo
  • node flags.js --csv
• Checked the output CSV file flags-out.csv and validated contents.
• Confirmed flags from selected modules (oss, rn, www) load and render accurately.
• Manually inspected terminal output for correctness and readability.

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