create auth service

[tuandat95cbn]

• change authen mechanism to OAuth2
• Split base module to education service and auth service
• using auth service to secure education service

[tuandat95cbn]

https://fusionauth.io/learn/expert-advice/oauth/differences-between-oauth-2-oauth-2-1/

[tuandat95cbn]

spring-projects/spring-authorization-server#499

[tuandat95cbn]

https://datatracker.ietf.org/doc/html/draft-ietf-oauth-browser-based-apps