Added 'select-objects' DB helper.

Adds a simple object and type mapping select function for use in listings and simple object gets.

Example:

	SELECT
		SomeID AS `id:int`,
		FirstName AS `name.first`,
		LastName AS `name.last`,
		AnotherColumn AS `other`
	FROM SomeTable

Result:

	[{
		id: 1234,
		name: {
			'first': "Sideshow",
			'last': "Bob"
		},
		other: "some value"
	}, ...]

For review: @adam-patterson @ngallagher87