Add new sort types

[jmgasper]

Currently, we can only sort a list of challenges by:

"\"sortBy\" must be one of [updatedBy, updated, createdBy, created, endDate, startDate, projectId, name, typeId, overview.totalPrizes]"

We would also like to be able to sort by the following fields (ascending / descending)

• Type name (Challenge, F2F, Marathon Match, Practice, etc...)
• Number of registrants
• Number of submissions
• Status name (Active, Post-Mortem, Draft, etc...)

NOTE - The error message above must be accurate as well, after the changes, and updated tests should be included.

[jmgasper]

@rakibansary - Can we integrate this into the DAL changes please?