Project Standardization

[theoreticalbts]

@sgerbino task list:

• [x] Prefix non-build targets with koinos_
• [x] Match namespace with include directories
• [x] Libraries such as exception and log live in a higher level include path (e.g. koinos/log.hpp and koinos/exception.hpp)
• [x] All tests should live in the tests/ sub directory and not in programs, (e.g. strpolate and vmtest)
• [x] CI should test Xcode builds on macOS when RUN_TYPE is test
• [x] Automatically generate schema files when using Xcode
• [x] Make koinos-vm (formerly vmtest) a proper VM driver program

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@theoreticalbts comments:

We should standardize things like name prefixes and header paths.

• koinos/exception.hpp vs koinos/exception/exception.hpp file path for "important" headers
• fork vs koinos_fork target name

[mvandeberg]

Prefix non-vendor build targets with koinos.

Header include path should match namespace.

Single header targets have the option to live in koinos global namespace.

Whatever you do with namespaces in a source file (i.e. detail) is up to you.