Propose new collection and map argument checking methods in KiwiPreconditions

[sleberknight]

Propose adding methods to check collection and/or map arguments for things like emptiness, specific sizes, etc.

Examples:

• <T> checkArgumentNotEmpty(Collection<T> items)
• <T> checkArgumentHasSizeExactly(Collection<T> items, int exactSize)
• <T> checkArgumentHasSizeAtLeast(Collection<T> items, int minimumSize)
• <T> checkArgumentHasSizeAtMost(Collection<T> items, int maximumSize)
• <K, V> checkArgumentNotEmpty(Map<K, V> map)

I actually needed (wanted) the collection and map "not empty" variants recently. The exact, min, and max size are things that might be "nice to have". Of course could have the same size variants for Map arguments.

Each should have the three "standard" variants:

• just the argument to check
• the argument to check and a message
• the argument, a message template, and a vararg for the template arguments

[sleberknight]

Partially implemented by #753 (via PR #754) - includes the checkArgumentNotEmpty methods for Collection and Map

[sleberknight]

Marking this as resolved. We don't really need the other proposed methods at present.