Add more constructors to StackContainer<T>

[Chingling152]

Summary

Provide a clear and concise description of the feature you are requesting.

Constructors

• StackContainer(int size, int maxStackSize) - Creates a container with the specified number of empty slots, using StackSlot<T> instance with a maxStackSize.
• StackContainer(IEnumerable<T> items) - Creates a container with the specified number of empty slots and slot capacity using the StackSlot<T> instance with a maxStackSize.
• StackContainer(IEnumerable<T> items, int maxStackSize) - Creates a container with the specified number of slots with items and slot capacity using the StackSlot<T> instance with a maxStackSize.