Lazily expose server.dependencies instead of dropping it

src/fastmcp/server/__init__.py

@@ -1,5 +1,13 @@
+import importlib
+
 from .context import Context
 from .server import FastMCP, create_proxy
 
 
+def __getattr__(name: str) -> object:
+    if name == "dependencies":
+        return importlib.import_module("fastmcp.server.dependencies")
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
+
+
 __all__ = ["Context", "FastMCP", "create_proxy"]