huggingface / huggingface/diffusers

Missing `"linspace"` timestep spacing option for `DDIMInverseScheduler`

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Description

**Is your feature request related to a problem? Please describe.**
I was wondering why the `"linspace"` timestep spacing option is not available also for the `DDIMInverseScheduler` class, as it is for other schedulers like `DDIMScheduler` and `DDIMScheduler`.
https://github.com/huggingface/diffusers/blob/9f06a0d1a4a998ac6a463c5be728c892f95320a8/src/diffusers/schedulers/scheduling_ddim_inverse.py#L284

**Describe the solution you'd like.**
The code could be copied from the other cited schedulers where it is already implemented.

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