Restructured MCP section

[sofietoft]

📋 Description

Grouped similar sections together for scalability.
Update some section names for clarity.

Product & Version (if relevant)

Umbraco in AI

Deadline (if relevant)

Anytime.

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[github-actions]

The Link Checker found broken links in your PR.
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Broken links found in: 17/umbraco-in-ai/mcp/connect-to-an-mcp-server/hosted-mcp-setup/chatgpt.md

⚠ Unknown error → [403] https://help.openai.com/ (at 14:181) |#124; Rejected status code: 403 Forbidden

Broken links found in: 17/umbraco-in-ai/mcp/custom-mcp-server/hosted-mcp/deployment/infrastructure-as-code.md

⚠ Unknown error → [403] https://dash.cloudflare.com/sign-up (at 35:5) |#124; Rejected status code: 403 Forbidden

Broken links found in: 17/umbraco-in-ai/mcp/custom-mcp-server/hosted-mcp/README.md

⚠ Unknown error → [403] https://dash.cloudflare.com/sign-up (at 25:5) |#124; Rejected status code: 403 Forbidden

Broken links found in: 17/umbraco-in-ai/mcp/setup-a-hosted-mcp-server/self-hosted-quickstart.md

⚠ Unknown error → [403] https://dash.cloudflare.com/sign-up (at 18:5) |#124; Rejected status code: 403 Forbidden

Broken links found in: 18/umbraco-in-ai/mcp/connect-to-an-mcp-server/hosted-mcp-setup/chatgpt.md

⚠ Unknown error → [403] https://help.openai.com/ (at 14:181) |#124; Rejected status code: 403 Forbidden

Broken links found in: 18/umbraco-in-ai/mcp/custom-mcp-server/hosted-mcp/deployment/infrastructure-as-code.md

⚠ Unknown error → [403] https://dash.cloudflare.com/sign-up (at 35:5) |#124; Rejected status code: 403 Forbidden

Broken links found in: 18/umbraco-in-ai/mcp/custom-mcp-server/hosted-mcp/README.md

⚠ Unknown error → [403] https://dash.cloudflare.com/sign-up (at 25:5) |#124; Rejected status code: 403 Forbidden

Broken links found in: 18/umbraco-in-ai/mcp/setup-a-hosted-mcp-server/self-hosted-quickstart.md

⚠ Unknown error → [403] https://dash.cloudflare.com/sign-up (at 18:5) |#124; Rejected status code: 403 Forbidden