Modernize Python repo | XBlocks

Description

In this ticket, we have to modernize the following repos with:

Details for each step can be found on the parent ticket: #506

Repo	PR	Status	Released
XBlock	openedx/XBlock#914	Merged	✅
xblock-sdk	openedx/xblock-sdk#519	Merged	✅
acid-block	openedx/acid-block#282	Approved	⬜
edx-ora2	openedx/edx-ora2#2441	In Review	⬜
xblock-image-explorer	openedx/xblock-image-explorer#265	Approved	⬜
xblock-drag-and-drop-v2	openedx/xblock-drag-and-drop-v2#541	Merged	✅
xblock-google-drive	openedx/xblock-google-drive#235	In Review	⬜
xblock-lti-consumer	openedx/xblock-lti-consumer#685	In Review	⬜
xblock-in-video-quiz	openedx/xblock-in-video-quiz#335	Merged	✅
xblock-skill-tagging	openedx/xblock-skill-tagging#61	Approved	⬜
xblocks-core	openedx/xblocks-core#251	Merged	✅
RecommenderXBlock	openedx/RecommenderXBlock#136	Merged	✅
DoneXBlock	openedx/DoneXBlock#388	Merged	✅
staff-graded-xblock	openedx/staff-graded-xblock#394	In Review	⬜
crowdsourcehinter	openedx/crowdsourcehinter#283	Merged	✅

~~FeedbackXBlock~~ — Archived

@salman2013

@salman2013 please update the check list of whats being done as part of POC

@farhan

@farhan is reviewing it