Add Official Terraform mcp server

[mukeshjc]

Description

Adding the officially launched Terraform MCP Server from HashiCorp.

Dockerhub: https://hub.docker.com/r/hashicorp/terraform-mcp-server
Docs: https://developer.hashicorp.com/terraform/docs/tools/mcp-server

Server Details

• Server: terraform
• Changes to: no changes. new addition.

Motivation and Context

we are adding the official Terraform MCP Server to this registry so customers can discover it

How Has This Been Tested?

This is the officially developed by HashiCorp and has been thoroughly tested including e2e tests as listed in the Github repo.

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

[gautambaghel]

Hi @tadasant - could you please review and merge this?