Add the official Plainly Videos MCP

[danixeee]

Description

Add Plainly Videos official MCP server.

Server Details

Integration with Plainly Videos API that allows browsing designs and project, as well as creating video variations using LLM clients.

How Has This Been Tested?

The server is tested with Copilot.

Breaking Changes

None

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Protocol Documentation
• My changes follows MCP security best practices
• I have updated the server's README accordingly
• I have tested this with an LLM client
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have documented all environment variables and configuration options

Additional context

None