FEAT(SpatialRegistry.sol): Add spatial registry

[ronerlih]

Added the new Spatial registry contract

The flow consists of three contracts,

• RegistryFactory.sol: Generates a spatialRegistry to be used by a data-provider (organization)
• SpatialRegistry.sol: Spatial registry the holds spatial assets.
• Coordinates.sol: Provisional contract, created by the registry, that stores all coordinates belonging to a registry.

Checklist before requesting a review

• I have performed a self-review of my code
• If it is a core feature, I have added thorough tests. [Not at this point]
• Do we need to implement analytics? [Not at this point]
• Will this be part of a product update? If yes, please write one phrase about this update. [Not at this point]

Closes #36