Add Index on role.name to Accelerate Query

[wtune]

Problem

Missing index on table role column name might make the underlying query issued via RoleServiceImpl#create and RolseServiceImpl#update slow. Since this query try to find role by its name.

https://github.com/elunez/eladmin/blob/286a48368f6a1899d953b57c75b4f2b38d8f93a2/eladmin-system/src/main/java/me/zhengjie/modules/system/service/impl/RoleServiceImpl.java#L83

https://github.com/elunez/eladmin/blob/286a48368f6a1899d953b57c75b4f2b38d8f93a2/eladmin-system/src/main/java/me/zhengjie/modules/system/service/impl/RoleServiceImpl.java#L96

Possible Solution

Add Index on role.name

[elunez]

后续修改