feat: 添加信息图插件，并更新相关插件模板和开发文档。

plugins/actions/infographic/README_EN.md

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+# AntV Infographic Plugin
+
+Transform text content into beautiful infographics with a single click. Supports lists, hierarchies, processes, relationships, comparisons, analysis, charts, and more.
+
+## Features
+
+- **Smart Analysis**: Automatically identifies text structure and selects the best template.
+- **Rich Templates**: Supports 20+ AntV infographic templates, including lists, trees, mind maps, roadmaps, Sankey diagrams, SWOT, quadrant charts, bar charts, pie charts, etc.
+- **Auto Icons**: Intelligently searches and matches appropriate icons.
+- **Multi-format Export**: Export as SVG, PNG, or HTML.
+- **Multi-language**: Output language follows user settings.
+
+## Usage
+
+In the Open WebUI chat interface, simply input text or upload a document, then enable this plugin. The plugin will analyze the content and generate an infographic.
+
+### Supported Chart Types
+
+#### 1. List & Hierarchy
+- **List**: Grid Cards (`list-grid`), Vertical List (`list-vertical`)
+- **Tree**: Vertical Tree (`tree-vertical`), Horizontal Tree (`tree-horizontal`)
+- **Mindmap**: `mindmap`
+
+#### 2. Sequence & Relationship
+- **Process**: Roadmap (`sequence-roadmap`), Zigzag Process (`sequence-zigzag`), Horizontal Process (`sequence-horizontal`)
+- **Relationship**: Sankey Diagram (`relation-sankey`), Circular Relationship (`relation-circle`)
+
+#### 3. Comparison & Analysis
+- **Comparison**: Binary Comparison (`compare-binary`), Comparison Table (`compare-table`)
+- **Analysis**: SWOT Analysis (`compare-swot`), Quadrant Chart (`quadrant-quarter`)
+
+#### 4. Charts & Data
+- **Statistics**: Statistic Cards (`statistic-card`)
+- **Charts**: Bar Chart (`chart-bar`), Column Chart (`chart-column`), Line Chart (`chart-line`), Pie Chart (`chart-pie`), Doughnut Chart (`chart-doughnut`)
+
+## Installation
+
+Place `infographic.py` (English version) or `信息图.py` (Chinese version) into your Open WebUI plugins directory.
+
+## Dependencies
+
+- Depends on `@antv/infographic` library (loaded via CDN).
+- Requires internet access to load CDN resources and icons.