Add GoodMemory to MCP server guide

[hjqcan]

What this changes

Adds GoodMemory to the existing “More MCP servers worth knowing” table as a local-first, auditable memory option for Claude Code. The entry stays one line and links to the canonical setup documentation in the source repository.

Checklist (see CONTRIBUTING.md)

• No date-sensitive claim is introduced; current behavior is documented at the linked source
• No heading is renamed or removed
• No skill is added
• The addition stays in the existing comparison table and avoids marketing language

Verification

• git diff --check
• Source repository URL returns HTTP 200

Disclosure

I maintain GoodMemory. This documentation contribution was prepared with Codex assistance under my authorization.