[BB-11327] Add editor column to xblocks csv report

[pkulkark]

Description

This PR adds a "editor" column to the xblocks csv report so that it can differentiate between raw html and visual html elements.

Supporting Information

OpenCraft Internal Jira task: BB-11327

Testing Instructions

1. Deploy this branch
2. Create a few different types of blocks, including some that uses the html editor.
3. Run the management command described in feat: Management command to generate a CSV report of xblocks used in all courses or specific courses #38676
4. In the generated report, confirm that the html type components show the right type of editor info. All other types of component should leave the editor column empty.

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[ChrisChV]

Looks good 👍

• I tested this: I followed the testing instructions and I verified the new column
• I read through the code and considered the security, stability and performance implications of the changes.
• Includes tests for bugfixes and/or features added.