Add ClickSend community tool integration

[shiblymohamed-arch]

Overview

This PR adds ClickSend as a community tool integration to the LangChain JavaScript documentation. ClickSend is a cloud-based communications platform that enables developers to send SMS, Email, and Voice messages through a unified API.

Type of change

Type: New documentation page

Related issues/PRs

• GitHub issue: N/A
• Feature PR: N/A

Checklist

• I have read the contributing guidelines
• I have tested my changes locally using docs dev
• All code examples have been tested and work correctly
• I have used root relative paths for internal links
• I have updated navigation in src/docs.json if needed

Additional notes

Integration details:

• npm package: @clicksend/langchain-clicksend-mcp
• Repository: https://github.com/ClickSend/langchain-mcp-adapter
• Provides LangChain tools for sending SMS, Email, and Voice via ClickSend
• Integration is maintained externally following LangChain's community integration guidelines

Files changed:

• Created: src/oss/javascript/integrations/tools/clicksend.mdx - Full documentation page for ClickSend integration
• Updated: src/oss/javascript/integrations/tools/index.mdx - Added ClickSend card to tools list

Disclaimer: This contribution was ensure proper documentation formatting and adherence to LangChain's documentation standards.