[Feature] Terrain Edits Clear all except bases

[m0lz]

Summary

Additional button to clear Terrain Edits not including base edits

Confirm the following statements

• I have checked that this feature is not already available in the latest release of NMSE.
• I have searched the issue tracker and found no duplicate.
• I have searched the documentation and found nothing matching this request.
• This issue contains only one feature request.
• I have read and agree to follow the code of conduct.

Description

As suggested by yourself on Discord, Additional button to clear Terrain Edits not including base edits.
Making this request as a reminder.

Use case

Leaves all base Terrain edits intact

Desired outcome

Bases keep Terrain Edits, but the rest of the save is scoured of Terrain Edits

Acceptance criteria

Josh is a happy beaver

Additional information

Inside every peanut there is a rabbit

[vectorcmdr]

Now included in the latest build 👍