Make CollectionAgeLimitAttribute easy to use!

[bluexo]

This PR make CollectionAgeLimitAttribute user friendly .

// This grain has 10 hours age limit
[CollectionAgeLimit(Hours = 10)]
class SampleGrainClass1 : Grain ...
{
}

// This grain has 1 day +10 hours + 30 minutes age limit
[CollectionAgeLimit(Days = 1, Hours = 10 , Minutes = 30)]
class SampleGrainClass2 : Grain ...
{
}

//This grains has 32767 days age limit
[CollectionAgeLimit(AlwaysActive = true)]
class SampleGrainClass3 : Grain ...
{
}

[sergeybykov]

Thank you, @bluexo!