You need to implement the following commands:
- Registration of the client full name and date of birth.
- Checking the client's balance.
- Accrual/Debit of the specified amount from the client.
- Write a unit test for multi-threaded accrual and checking balances:
- preparation for the test - registration of 50 users.
- execution in 10 streams of accrual/debit to these users.
You need to use WebApi and EF.