[REFACTOR] Optimize DeviceRepository Using Lamda expression

[AbdalrhmanHemida]

Use the lambda Expression for DeviceRepository methods to optimize the code.

Why use the lambda expression?

• Makes our code more readable and shorter. Instead of instantiation of an anonymous inner class that implements the abstract method run() on the interface Runnable, we use the lambda expression to do that.

For example

instead of writing

UserDatabase.databaseWriteExecutor.execute(new Runnable() {
            @Override
            public void run() {
                detoxPeriodDao.insert(detoxPeriod);
            }
        });

we write:

UserDatabase.databaseWriteExecutor.execute(
                () -> detoxPeriodDao.insert(detoxPeriod)
        );

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