Feature: possibility to change scene's start and end

Description of fix

Removed scene frame_* disabling.

How to test it

• Start stax.
• Change scene's boundaries.

Checklist

Please check if your MR fulfills the following requirements:

• Build was run locally and any changes were pushed
• Lint has passed locally without error
• CHANGELOG.md has been updated
• Branch has been rebased on merge branch

FYI: @awesome_dev_too