Add api version to get_version call

[Jaqueeee]

Will be needed in future, when api gets updated. Ideally it should be aligned with mymonero api.
@vtnerd

[moneroexamples]

I can add it rpc api version to current get_version call. A api version number similar to CORE_RPC_VERSION in monero would be good i think?

[Jaqueeee]

Yes. That's a great idea.

[moneroexamples]

I added tentatively the api version to upgrade_angularjs branch. It is already being displayed in the dev testnet version: http://139.162.32.245:81 . The versioning in the backend is based on CORE_RPC_VERSION stype, i.e.,

#define OPENMONERO_RPC_VERSION_MAJOR 1
#define OPENMONERO_RPC_VERSION_MINOR 0
#define MAKE_OPENMONERO_RPC_VERSION(major,minor) (((major)<<16)|(minor))
#define OPENMONERO_RPC_VERSION \
    MAKE_OPENMONERO_RPC_VERSION(OPENMONERO_RPC_VERSION_MAJOR, OPENMONERO_RPC_VERSION_MINOR)

[Jaqueeee]

Thanks!