Add UTs for Command Classes

[dfederm]

For each command of each command class, write UTs.

For "get"/"report" command pairs, something like:

MockDriver driver = new();
Node node = new Node();
FooCommandClass commandClass = new(node, driver, ...);

ReadOnlySpan<byte> responseData = new[] { ... };
dirver.MockResponse(FooCommand.Get, responseData);

var state = await commandClass.GetAsync();

// Verify the report command's parsing
Assert.AreEqual(someValue, commandClass.State.Something);

// Verify Get command's binary format
Assert.AreEqual(1, driver.SentCommands.Count);
CollectionAssert.AreEqual(new[] { ... }, driver.SentCommands[0]);

"Set" commands would be similar, but without the response part.

Likely interfaces would need to be introduced, for example IDriver so that a MockDriver could be produced for the UT.

CCs needing UTs:

• Basic
• Battery
• BinarySensor
• BinarySwitch
• ColorSwitch
• ManufacturerSpecific
• MultilevelSensor
• MultilevelSwitch
• Notification
• Powerlevel
• Version
• WakeUp
• ZWavePlusInfo