Add version information to API

[gavv]

C library provides version info: https://roc-streaming.org/toolkit/docs/api/reference.html#roc-version

It would be nice to add this feature to the java library too. We need to provide two versions actually: version of the native library (libroc), and version of the bindings (which may be slightly different).

This issue requires updating both JNI and java parts.

[saurabhyadavdev]

@gavv Kindly assign this issue to me in case it hasn't been claimed yet.

[gavv]

Sure, thanks!

[gavv]

@saurabhyadav1985 Hi, do you still have plans on this?

[ayushkumar105]

@gavv Can I work on this issue and 83?

[gavv]

Sure, thanks!

Note that roc-java is not yet updated to the latest roc-toolkit, so you'll need to install roc-toolkit from 0.2.x tag rather than from master.