Modal

- Deprecated `.lookup` methods on Modal objects. Users are encouraged to use `.from_name` instead. In most cases this will be a simple name substitution. See [the 1.0 migration guide](https://modal.com/docs/guide/modal-1-0-migration#deprecating-the-lookup-method-on-modal-objects) for more information.

* Fixes bug introduced in v0.72.48 where `modal run` didn't work with files having global `Function.from_name()`/`Function.lookup()`/`Cls.from_name()`/`Cls.lookup()` calls.

* Fixes a CLI bug where you couldn't reference functions via a qualified app, e.g. `mymodule::{app_variable}.{function_name}`.
* The `modal run`, `modal serve` and `modal shell` commands get more consistent error messages in cases where the passed app or function reference isn't resolvable to something that the current command expects.
* Removes the deprecated `__getattr__`, `__setattr__`, `__getitem__` and `__setitem__` methods from `modal.App`

- Introduced a new public method, `.hydrate`, for on-demand hydration of Modal objects. This method replaces the existing semi-public `.resolve` method, which is now deprecated.

* The Image returned by `Sandbox.snapshot_filesystem` now has `object_id` and other metadata pre-assigned rather than require loading by subsequent calls to sandboxes or similar to set this data.

* Adds a new `oidc_auth_role_arn` field to `CloudBucketMount` for using OIDC authentication to create the mountpoint.