Create a POC for 'immer' library

What does this MR do?

As mentioned on &3821 (closed), we need to find a solution to make Apollo Client cache updates immutable.

This MR created a POC for using immer on Design Management app for immutable Apollo cache updates.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done