Initializes a run for all trackers stored in `self.log_with`, potentially with starting configurations

        Args:
            project_name (`str`):
                The name of the project. All trackers will save their data based on this
            config (`dict`, *optional*):
                Optional starting configuration to be logged.
            init_kwargs (`dict`, *optional*):
                A nested dictionary of kwargs to be passed to a specific tracker's `__init__` function. Should be
                formatted like so:
                ```python
                {"wandb": {"tags": ["tag_a", "tag_b"]}}
                ```

        Example:

        ```python
        >>> from accelerate import Accelerator

        >>> accelerator = Accelerator(log_with="tensorboard")
        >>> accelerator.init_trackers(
        ...     project_name="my_project",
        ...     config={"learning_rate": 0.001, "batch_size": 32},
        ...     init_kwargs={"tensorboard": {"flush_secs": 60}},
        ... )
        ```
        Z