Add audience handling in token request message context#47

Lashen1227 wants to merge 2 commits intowso2-extensions:mainwso2-extensions/identity-oauth2-grant-token-exchange:mainfrom

Lashen1227:feat/pre-issue-access-token-action-token-exchangeLashen1227/identity-oauth2-grant-token-exchange:feat/pre-issue-access-token-action-token-exchangeCopy head branch name to clipboard