Add Support of Distance Based SSA

[maghamed]

The Distance Priority Algorithm is a new out-of-the-box Source Selection Algorithm for distance-based shipping recommendations. This algorithm compares the location of the shipping destination address with source locations to determine the closest source to fulfill shipments. The distance may be determined by physical distance or time spent traveling from one location to another, using imported database location data or Google directions (driving, walking, or bicycling). See Configure MSI SSA.