adds validation and connects to students api for personnal data

src/app/members/account/account-routing.module.ts

src/app/members/account/core/index.ts

src/app/members/account/core/personal-data.model.ts

src/app/members/account/core/personal-data.service.ts

src/app/members/account/edit-data/edit-data.component.html

src/app/members/account/edit-data/edit-data.component.scss

src/app/members/account/edit-data/edit-data.component.ts

src/app/members/account/my-data/my-data.component.html

src/app/members/account/my-data/my-data.component.ts

src/app/members/account/my-file/my-file.component.ts