Inject core in all places needed

Author: AndyTitu

example/example.py

@@ -17,7 +17,7 @@ async def main():
 
     # Connects to 1Password.
     client = await Client.authenticate(
-        auth=DesktopAuth("AndiTituTest"),
+        auth=token,
         # Set the following to your own integration name and version.
         integration_name="My 1Password Integration",
         integration_version="v1.0.0",

src/onepassword/items.py

@@ -15,8 +15,8 @@ class Items:
     def __init__(self, client_id, core):
         self.client_id = client_id
         self.core = core
-        self.shares = ItemsShares(client_id)
-        self.files = ItemsFiles(client_id)
+        self.shares = ItemsShares(client_id, core)
+        self.files = ItemsFiles(client_id, core)
 
     async def create(self, params: ItemCreateParams) -> Item:
         """