* feat: show error msg from server on paste
* feat: add an allowlist of for supported blocks in library
Libraries v2 currently don't support editing blocks other than problem,
text and videos. This commit adds a configuration variable called
`LIBRARY_SUPPORTED_BLOCKS` to setup allowed list of block types users
can paste into libraries. By default it is set to support
'problem,text,video,html`.
* feat: enable add button for blocks based on setting
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Co-authored-by: Rômulo Penido <romulo@opencraft.com>
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