[FEATURE REQ] Add sample: realize the function of azure-spring-boot-starter-active-directory-b2c only through spring security

[zhichengliu12581]

Related issue: #23545
We can implement the functions provided in azure-spring-boot-starter-active-directory-b2c only through spring security. We need to add the corresponding sample to tell the user how to configure the code of related functions.

1. Spring Security can support multi Tenant, similar to the sample provided by spring:
2. Spring security can customize the verification of audience.
3. Users can determine the default client through spring configuration
4. Users can configure the information of each client by themselves