added TestAppBackend url property

Signed-off-by: CoyoteBringsFire <aumkara@gmail.com>
added TestAppBackend to projects

Signed-off-by: CoyoteBringsFire <aumkara@gmail.com>
bindings for TestAppBackend

Signed-off-by: CoyoteBringsFire <aumkara@gmail.com>
refactored to make REST calls to TestAppBackend for the calculation results

Signed-off-by: CoyoteBringsFire <aumkara@gmail.com>