feat: Clone DataDocs into other Environments

[baumandm]

Adds support for cloning a DataDoc into another environment.

• Refactored the Clone button logic into a sub component of the DataDocRightSidebar
• Added a <Select> with the environments available to the user
• Defaults to the current environment
• Added an optional POST parameter environment_id to the clone endpoint
• The API call is backwards-compatible, defaults to the DataDoc's environment as before
• Redirects to the DataDoc in the selected environment after cloning.

The cloned DataDoc may use Query Engines that are not available in the selected environment, which gives Invalid Query Cell warnings as shown below. This is not automatically adjusted during the clone process, it needs to be manually fixed after cloning. IMHO this is preferable since it ensures a human will review the selected Query Engines for correctness.

[jczhong84]

thanks for the PR @baumandm !

[jczhong84]

this component name seems a bit weird to me. I think this component could be just an environment selector, and move the messages to the DataDocCloneButton component.