feat: add resource annotations support to FastMCP (#1468)

Author: fennb

tests/server/fastmcp/resources/test_resource_template.py

@@ -257,4 +257,4 @@ def get_item(item_id: str) -> str:  # pragma: no cover
 
         # Verify the resource works correctly
         content = await resource.read()
-        assert content == "Item 123"
+        assert content == "Item 123"

tests/server/fastmcp/resources/test_resources.py

@@ -200,4 +200,4 @@ def test_audience_validation(self):
 
         # Invalid roles should raise validation error
         with pytest.raises(Exception):  # Pydantic validation error
-            Annotations(audience=["invalid_role"])  # type: ignore
+            Annotations(audience=["invalid_role"])  # type: ignore