add: add mcp-context7 descriptions (#2149)

plugins/wasm-go/mcp-servers/mcp-context7/README.md

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+# Context7 MCP Server
+
+An implementation of the Model Context Protocol (MCP) server that integrates [Context7](https://context7.com), providing up-to-date, version-specific documentation and code examples.
+
+Source Code: [https://github.com/upstash/context7](https://github.com/upstash/context7)
+
+## Features
+
+- Get up-to-date, version-specific documentation
+- Extract real, working code examples from source
+- Provide concise, relevant information without filler
+- Free for personal use
+- Integration with your MCP server and tools
+
+## Usage Guide
+
+### Generate SSE URL
+
+On the MCP Server interface, log in and enter the API-KEY to generate the URL.
+
+### Configure MCP Client
+
+On the user's MCP Client interface, add the generated SSE URL to the MCP Server list.
+
+```json
+"mcpServers": {
+    "context7": {
+      "url": "https://mcp.higress.ai/mcp-context7/{generate_key}",
+    }
+}
+```
+
+### Available Tools
+
+#### resolve-library-id
+Resolves a general package name into a Context7-compatible library ID. This is a required first step before using the get-library-docs tool.
+
+Parameters:
+- query: Library name to search for and retrieve a Context7-compatible library ID (required)
+
+#### get-library-docs
+Fetches up-to-date documentation for a library. You must call resolve-library-id first to obtain the exact Context7-compatible library ID.
+
+Parameters:
+- folders: Folders filter for organizing documentation
+- libraryId: Unique identifier of the library (required)
+- tokens: Maximum number of tokens to return (default: 5000)
+- topic: Specific topic within the documentation
+- type: Type of documentation to retrieve (currently only "txt" supported)

plugins/wasm-go/mcp-servers/mcp-context7/README_ZH.md

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+# Context7 MCP Server
+
+一个集成了[Context7](https://context7.com)的模型上下文协议（MCP）服务器实现，提供最新、版本特定的文档和代码示例。
+
+源码地址：[https://github.com/upstash/context7](https://github.com/upstash/context7)
+
+## 功能
+
+- 获取最新、版本特定的文档
+- 从源码中提取真实可用的代码示例
+- 提供简洁、相关的信息，无冗余内容
+- 支持个人免费使用
+- 与MCP服务器和工具集成
+
+## 使用教程
+
+### 生成 SSE URL
+
+在 MCP Server 界面，登录后输入 API-KEY，生成URL。
+
+### 配置 MCP Client
+
+在用户的 MCP Client 界面，将生成的 SSE URL添加到 MCP Server列表中。
+
+```json
+"mcpServers": {
+    "context7": {
+      "url": "https://mcp.higress.ai/mcp-context7/{generate_key}",
+    }
+}
+```
+
+### 可用工具
+
+#### resolve-library-id
+用于将通用包名解析为Context7兼容的库ID，是使用get-library-docs工具获取文档的必要前置步骤。
+
+参数说明：
+- query: 要搜索的库名称，用于获取Context7兼容的库ID (必填)
+
+#### get-library-docs
+获取库的最新文档。使用前必须先调用resolve-library-id工具获取Context7兼容的库ID。
+
+参数说明：
+- folders: 用于组织文档的文件夹过滤器
+- libraryId: 库的唯一标识符 (必填)
+- tokens: 返回的最大token数，默认5000
+- topic: 文档中的特定主题
+- type: 要检索的文档类型，目前仅支持"txt"

plugins/wasm-go/mcp-servers/mcp-context7/mcp-server.yaml

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+server:
+  name: context7-mcp-server
+tools:
+  - name: resolve-library-id
+    description: Required first step - Resolves a general package name into a Context7-compatible library ID. Must be called before using 'get-library-docs' to retrieve a valid Context7-compatible library ID.
+    args:
+      - name: query
+        description: Library name to search for and retrieve a Context7-compatible library ID.
+        type: string
+        required: true
+        position: query
+    requestTemplate:
+      url: https://context7.com/api/v1/search
+      method: GET
+    responseTemplate:
+      body: |
+        {{- range $index, $item := .results }}
+          ## 结果 {{add $index 1}}
+          - **id**: {{ $item.id }}
+          - **title**: {{ $item.title }}
+          - **description**: {{ $item.description }}
+        {{- end }}
+  - name: get-library-docs
+    description: Fetches up-to-date documentation for a library. You must call 'resolve-library-id' first to obtain the exact Context7-compatible library ID required to use this tool.
+    args:
+      - name: folders
+        description: Folders filter for organizing documentation
+        type: string
+        position: query
+      - name: libraryId
+        description: Unique identifier of the library
+        type: string
+        required: true
+        position: path
+      - name: tokens
+        description: Maximum number of tokens to return
+        type: integer
+        position: query
+        default: 5000
+      - name: topic
+        description: Specific topic within the documentation
+        type: string
+        position: query
+      - name: type
+        description: Type of documentation to retrieve
+        type: string
+        position: query
+        enum: ["txt"]
+    requestTemplate:
+      url: https://context7.com/api/v1{libraryId}
+      method: GET
+      headers:
+        - key: X-Context7-Source
+          value: server
+