feat: add MCP server templates and deployment infrastructure

Introduce a Helm-chart-like template system for MCP servers. Templates are
YAML files in templates/ that get seeded into the DB on startup. Users can
browse them with `mcpctl get templates`, inspect with `mcpctl describe
template`, and instantiate with `mcpctl create server --from-template=`.

Also adds Portainer deployment scripts, mcplocal systemd service,
Streamable HTTP MCP endpoint, and RPM packaging for mcpctl-local.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/mcpd/tsconfig.json

@@ -3,7 +3,7 @@
   "compilerOptions": {
     "rootDir": "src",
     "outDir": "dist",
-    "types": ["node"]
+    "types": ["node", "js-yaml"]
   },
   "include": ["src/**/*.ts"],
   "references": [