AXON-1857: Added ability to convert PR to draft and convert back to …#1570

BHulovatyi merged 5 commits intoAXON-1853-implement-draft-pr-functionalityatlassian/atlascode:AXON-1853-implement-draft-pr-functionalityfrom

AXON-1857-Add-ability-to-convert-draft-PR-to-regular-PRatlassian/atlascode:AXON-1857-Add-ability-to-convert-draft-PR-to-regular-PRCopy head branch name to clipboard