First commit, initialize files and data for the slowworker project

Signed-off-by: crescens <crescens.techstars@gmail.com>
Added UI and implementations to start working a simple demo

Signed-off-by: crescens <crescens.techstars@gmail.com>
Implemented the dispatch_sync in doWork method which work will queue the work

Signed-off-by: crescens <crescens.techstars@gmail.com>
Added an activity indicator view that load/spin when work is currently processed.

Signed-off-by: crescens <crescens.techstars@gmail.com>
Implemented some queue tweaks to make the processing time better.

Signed-off-by: crescens <crescens.techstars@gmail.com>
Signed-off-by: crescens <crescens.techstars@gmail.com>