* Simplifying libwaku.nim by extracting config parser to config.nim
* Adding json_base_event.nim
* Starting to control-version the libwaku.h
We are creating this libwaku.h inspired by the one that is automatically
generated by the nim compiler when `make libwaku` is invoked. Therefore,
the self-generated header is then placed in:
nimcache/release/libwaku/libwaku.h
* Better waku_example.c organization
* libwaku.nim: better memory management
We need to create a 'cstring' internally from the 'const char*' passed
from outside the library.
We invoke 'allocShared' in order to create the internal 'cstring',
and invoke 'deallocShared' in order to manually free the memory.
Ivan Folgueira Bande