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

[andreabosisio]

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.

diffusers/src/diffusers/schedulers/scheduling_ddim_inverse.py

Line 284 in 9f06a0d

f"{self.config.timestep_spacing} is not supported. Please make sure to choose one of 'leading' or 'trailing'."

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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[andreabosisio]

I kindly ask for an update on this matter.

[asomoza]

cc: @yiyixuxu

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

Please note that issues that do not follow the contributing guidelines are likely to be ignored.