Add docs

docs/en/UI/Angular/OAuth-Module.md

@@ -1,5 +1,14 @@
-# ABP OAuth Packages
+# ABP OAuth Package
+The authentication functionality has been moved from the @abp/ng.core to the @abp/ng.ouath since v7.0.
 
-@abp/core has the abstractions but logics moved @abp/oauth package since v7.0.
+If your app is version 7.0 or higher, you should include "AbpOAuthModule.forRoot()" in your app.module.ts as an import after "CoreModule.forRoot(...)".
 
+Those abstractions can be found in the @abp/ng-core packages.
+- `AuthService` (the class that implements the IAuthService interface).
+- `NAVIGATE_TO_MANAGE_PROFILE` Inject token.
+- `AuthGuard` (the class that implements the IAuthGuard interface).
 
+Those base classes are overridden by the "AbpOAuthModule" for oAuth.
+If you want to make your own authentication system, you must also change these 'abstract' classes.
+
+ApiInterceptor is provided by @abp/ng.oauth. The ApiInterceptor adds the token, accepted-language, and tenant id to the header of the HTTP request.