feat: add add-space-from-template tool

[Tom8810]

Why

The kintone MCP had no way to create a new space from an existing space template. Creating spaces typically requires a kintone System Administrator (or a user explicitly granted space-creation rights) and goes through the Templates REST API (POST /k/v1/template/space.json), so it is a privileged, write operation that should be exposed deliberately rather than as a general user action.

To keep the operation safe by default, this tool is disabled when using API token authentication (consistent with kintone-get-apps and kintone-add-app), since the Templates Space API does not work with API tokens.

What

• Add kintone-add-space-from-template: takes a template id, the new space name, a members array (USER / GROUP / ORGANIZATION entities with isAdmin and includeSubs), and optional isPrivate, isGuest, fixedMember flags. Calls KintoneRestAPIClient.space.addSpaceFromTemplate and returns the newly created space id as both structured content and pretty-printed JSON text.
• Input validation via Zod:
  • members must contain at least one entry, and at least one of them is expected to have isAdmin: true (matches the API requirement; otherwise the API rejects the request).
  • isGuest: true is only valid when the supplied template is a guest space template.
  • Optional flags default to false (isPrivate, isGuest, fixedMember, isAdmin, includeSubs).
• Add unit tests covering tool name, description, input/output schema (including default values, required-field errors, invalid enum values), and the callback path with mocked client.
• Update manifest.json, README.md, and README_en.md to list the new tool.
• Extend tool-filters so kintone-add-space-from-template is excluded under API token authentication.
• Extend the test createMockClient with a space.addSpaceFromTemplate mock hook.

How to test

1. Prepare a kintone environment where you can create spaces from templates, with KINTONE_BASE_URL and credentials that the Templates Space API accepts (e.g., a kintone System Administrator using username/password; not API-token-only).
2. With API token only, confirm kintone-add-space-from-template is not enabled (excluded by tool-filters).
3. With user authentication, call kintone-add-space-from-template with:
   • a valid template id,
   • a new space name,
   • a members array containing at least one member with isAdmin: true,
   • optionally isPrivate, isGuest, fixedMember.
4. Verify the response contains the newly created space id and that the space is visible in kintone (created immediately on the production environment; no deploy step).
5. Verify error paths:
   • empty members array → request is rejected before calling the API,
   • no member with isAdmin: true → API rejects the request,
   • isGuest: true against a non-guest template → API rejects the request.

Checklist

• Updated documentation if it is required.
• Added tests if it is required.
• Passed pnpm lint and pnpm test on the root directory.