Add Barcode-Lib4J to "Imagery" section

[vws-java]

Pull Request Proposal for Barcode-Lib4J

Library Information

Name: Barcode-Lib4J
URL: https://github.com/vws-java/Barcode-Lib4J
Proposed Awesome Java Category: "Imagery"
Description: Generates QR Code, DataMatrix, and other 1D/2D barcodes as vector (PDF, EPS, SVG) and raster (PNG, BMP, JPG) images with DPI awareness, high precision, and CMYK+RGB color model support.

Why This Library Should Be Added

Addressing Community Criteria: While Barcode-Lib4J may appear to have limited GitHub community metrics due to its recent open-source release (previously proprietary), it represents years of proven commercial usage with comprehensive documentation including professional-grade Javadoc and Best Practices & Examples. The library has been battle-tested in production environments over many years before being made available on GitHub & Maven Central under Apache 2.0.

Unique Features Distinguishing from Similar Entries

While ZXing (currently listed in "Imagery") mainly focuses on barcode scanning without image generation capabilities, Barcode-Lib4J provides a complete barcode-to-image pipeline with unique professional features:

1. Complete Image Generation Pipeline

• Direct Graphics2D integration for drawing and printing barcodes
• Unlike ZXing's encoding-only approach, provides full print and image export functionality

2. Format-specific Vector & Raster Output

• Vector formats: PDF, EPS, SVG with high coordinate precision (up to 6 decimal places)
• Raster formats: PNG, BMP, JPG with proper DPI handling stored in file headers
• Color model support: Full CMYK and RGB color space support, where format-appropriate
• PDF/X compliance: PDF/X-1a:2001 and PDF/X-3:2002 for color-accurate output
• EPS preview embedding: Optional TIFF preview
• Transparency support: Where format-appropriate

3. Print-specific Optimization

• Automatic bar width adjustment to printer resolution (critical for ≤600 DPI printers)
• Bar width reduction/correction for ink spread compensation in inkjet printers
• Professional print workflow support with CMYK color spaces

4. Production-Ready Architecture

• Battle-tested in commercial software products over many years
• Lightweight single JAR (~300KB) with no mandatory dependencies
• Comprehensive GS1 standard support with data validation
• Apache 2.0 licensed, available on Maven Central