feat: support streamable http transport (#243)

Adds support for the new StreamableHttp transport. I'm not aware of any
clients that implement it, but somebody's gotta make the start! Once
some clients support it, we can also advertise it in the README.

package.json

@@ -34,7 +34,7 @@
     }
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.6.1",
+    "@modelcontextprotocol/sdk": "^1.10.1",
     "commander": "^13.1.0",
     "playwright": "1.53.0-alpha-1745357020000",
     "yaml": "^2.7.1",