feat: add support for typescript fastmcp and frameworks selection

[IBJunior]

Add FastMCP framework support

Adds FastMCP as an alternative framework option alongside the official MCP SDK.

Changes

• New framework selection prompt - Users can now choose between "Official MCP SDK" (full control with Express.js) or "FastMCP" (simpler API, less boilerplate)
• Reorganized template structure - Templates moved from streamable-http/ and stateful-streamable-http/ to sdk/stateless/, sdk/stateful/, and fastmcp/
• Framework-aware package.json - Generates correct dependencies based on framework choice (fastmcp + zod vs @modelcontextprotocol/sdk + express + zod)
• Consistent examples - Both frameworks include the same example tool, prompt, and resource

New CLI flow

? Project name: my-mcp-server
? Package manager: npm / pnpm / yarn
? Framework: Official MCP SDK / FastMCP ← NEW
? Server mode: Stateless / Stateful
? Enable OAuth authentication? (SDK stateful only)
? Initialize git repository?

Notes

• OAuth is only available for SDK stateful template (FastMCP uses its own auth approach)
• FastMCP handles stateless/stateful via config option rather than separate templates