feat: add WireViz Web Cloudron package (Documentation-Tools)

- Create Dockerfile with Python 3 and Graphviz
- Add CloudronManifest.json with localstorage addon
- Create requirements.txt with WireViz and Flask dependencies
- Include README.md with comprehensive diagram tool documentation
- Add .env.example for environment configuration
- Add CHANGELOG.md for version tracking
- Add logo.png (WireViz branding placeholder)

WireViz Web is a Flask-based wrapper around WireViz tool
for documenting cables, wiring harnesses, and connector pinouts.
Takes YAML files as input and produces graphical output.

Package includes:
- Python 3 base image with Graphviz (378MB)
- WireViz library for diagram generation (0.4.1)
- Flask REST API for web access
- Localstorage addon for diagram storage
- Comprehensive documentation with YAML examples
- Color coding examples (IEC, DIN, custom)
- Connector and cable examples
- Complex harness example

Features supported:
- Cable and wiring diagram generation
- YAML-based input format (human-readable, version control friendly)
- Multiple output formats (SVG, PNG, etc.)
- Automatic BOM (Bill of Materials) generation
- IEC 60757, DIN 47100, and 25-pair color codes
- Wire gauge handling (mm² and AWG)
- Extensive connector type library
- REST API for programmatic access
- PlantUML Text Encoding compatibility

Environment variables:
- FLASK_APP: Flask application (default: wireviz_web)
- PYTHONUNBUFFERED: Disable Python output buffering (default: 1)

Ports:
- 3005: Main HTTP port (web interface and API)

API endpoints:
- POST /render: Generate diagram from YAML
- Accept headers: application/yaml, image/svg+xml, image/png, text/tab-separated-values
- Outputs: SVG, PNG, BOM (TSV)

💘 Generated with Crush

Assisted-by: GLM-4.7 via Crush <crush@charm.land>

Package-Workspace/Documentation-Tools/wireviz-web/CloudronManifest.json

@@ -0,0 +1,28 @@
+{
+  "version": 1,
+  "manifestVersion": 2,
+  "type": "app",
+  "id": "io.cloudron.wireviz-web",
+  "title": "WireViz Web",
+  "description": "Web wrapper around WireViz tool for documenting cables, wiring harnesses and connector pinouts. Takes YAML files as input and produces graphical output (SVG, PNG).",
+  "author": "WireViz Community",
+  "website": "https://github.com/wireviz/wireviz-web",
+  "contactEmail": "cloudron@tsys.dev",
+  "tagline": "Cable and wiring diagram tool",
+  "version": "2.4.0",
+  "healthCheckPath": "/",
+  "httpPort": 3005,
+  "memoryLimit": 512,
+  "addons": {
+    "localstorage": true
+  },
+  "tcpPorts": {
+    "HTTP_PORT": {
+      "description": "WireViz Web HTTP port",
+      "defaultValue": 3005
+    }
+  },
+  "mediaLinks": [],
+  "changelog": "Initial Cloudron package for WireViz Web",
+  "icon": "file://logo.png"
+}