Add shared directory README (#10535)
Add shared directory README (#10535)

* Add shared directory README

* PR feedback

James-Ko/coreclr,AlexGhiondea/coreclr,James-Ko/coreclr,YongseopKim/coreclr,hseok-oh/coreclr,qiudesong/coreclr,yeaicc/coreclr,jamesqo/coreclr,rartemev/coreclr,hseok-oh/coreclr,mmitche/coreclr,cydhaselton/coreclr,ragmani/coreclr,poizan42/coreclr,botaberg/coreclr,hseok-oh/coreclr,qiudesong/coreclr,botaberg/coreclr,JonHanna/coreclr,yizhang82/coreclr,YongseopKim/coreclr,YongseopKim/coreclr,poizan42/coreclr,mskvortsov/coreclr,jamesqo/coreclr,tijoytom/coreclr,JosephTremoulet/coreclr,wtgodbe/coreclr,gkhanna79/coreclr,gkhanna79/coreclr,cmckinsey/coreclr,qiudesong/coreclr,botaberg/coreclr,wtgodbe/coreclr,JonHanna/coreclr,cmckinsey/coreclr,wtgodbe/coreclr,krytarowski/coreclr,parjong/coreclr,qiudesong/coreclr,rartemev/coreclr,krk/coreclr,kyulee1/coreclr,krk/coreclr,yizhang82/coreclr,pgavlin/coreclr,cydhaselton/coreclr,kyulee1/coreclr,krytarowski/coreclr,rartemev/coreclr,ruben-ayrapetyan/coreclr,pgavlin/coreclr,parjong/coreclr,parjong/coreclr,ragmani/coreclr,botaberg/coreclr,kyulee1/coreclr,yizhang82/coreclr,ruben-ayrapetyan/coreclr,cshung/coreclr,pgavlin/coreclr,wateret/coreclr,tijoytom/coreclr,ruben-ayrapetyan/coreclr,hseok-oh/coreclr,kyulee1/coreclr,yeaicc/coreclr,JonHanna/coreclr,parjong/coreclr,krk/coreclr,James-Ko/coreclr,AlexGhiondea/coreclr,rartemev/coreclr,YongseopKim/coreclr,jamesqo/coreclr,kyulee1/coreclr,JosephTremoulet/coreclr,pgavlin/coreclr,mskvortsov/coreclr,James-Ko/coreclr,mmitche/coreclr,hseok-oh/coreclr,wateret/coreclr,dpodder/coreclr,russellhadley/coreclr,alexperovich/coreclr,cmckinsey/coreclr,JosephTremoulet/coreclr,wtgodbe/coreclr,yizhang82/coreclr,alexperovich/coreclr,wateret/coreclr,alexperovich/coreclr,krytarowski/coreclr,poizan42/coreclr,poizan42/coreclr,cmckinsey/coreclr,ragmani/coreclr,qiudesong/coreclr,cydhaselton/coreclr,qiudesong/coreclr,mskvortsov/coreclr,yeaicc/coreclr,ragmani/coreclr,dpodder/coreclr,gkhanna79/coreclr,krk/coreclr,krytarowski/coreclr,alexperovich/coreclr,YongseopKim/coreclr,JonHanna/coreclr,yeaicc/coreclr,YongseopKim/coreclr,cmckinsey/coreclr,jamesqo/coreclr,russellhadley/coreclr,yizhang82/coreclr,AlexGhiondea/coreclr,hseok-oh/coreclr,poizan42/coreclr,alexperovich/coreclr,russellhadley/coreclr,cydhaselton/coreclr,jamesqo/coreclr,wateret/coreclr,cshung/coreclr,ragmani/coreclr,wateret/coreclr,cshung/coreclr,mmitche/coreclr,yizhang82/coreclr,mmitche/coreclr,tijoytom/coreclr,alexperovich/coreclr,James-Ko/coreclr,krytarowski/coreclr,JonHanna/coreclr,wtgodbe/coreclr,James-Ko/coreclr,dpodder/coreclr,dpodder/coreclr,ruben-ayrapetyan/coreclr,krytarowski/coreclr,sagood/coreclr,russellhadley/coreclr,JosephTremoulet/coreclr,krk/coreclr,pgavlin/coreclr,JonHanna/coreclr,cmckinsey/coreclr,russellhadley/coreclr,botaberg/coreclr,AlexGhiondea/coreclr,botaberg/coreclr,cshung/coreclr,mskvortsov/coreclr,JosephTremoulet/coreclr,gkhanna79/coreclr,tijoytom/coreclr,AlexGhiondea/coreclr,yeaicc/coreclr,yeaicc/coreclr,dpodder/coreclr,jamesqo/coreclr,gkhanna79/coreclr,ruben-ayrapetyan/coreclr,russellhadley/coreclr,sagood/coreclr,cmckinsey/coreclr,parjong/coreclr,cshung/coreclr,kyulee1/coreclr,ruben-ayrapetyan/coreclr,sagood/coreclr,mmitche/coreclr,JosephTremoulet/coreclr,tijoytom/coreclr,sagood/coreclr,rartemev/coreclr,pgavlin/coreclr,yeaicc/coreclr,tijoytom/coreclr,mskvortsov/coreclr,krk/coreclr,cydhaselton/coreclr,dpodder/coreclr,sagood/coreclr,cshung/coreclr,sagood/coreclr,ragmani/coreclr,wtgodbe/coreclr,gkhanna79/coreclr,rartemev/coreclr,mskvortsov/coreclr,mmitche/coreclr,cydhaselton/coreclr,poizan42/coreclr,wateret/coreclr,parjong/coreclr,AlexGhiondea/coreclr