Initially I wanted to also do a function that generates the JSON patch from
two JSON documents, but even just applying the JSON patch was a bit of
work, especially when needing to satisfy all the test-cases.
This change defines all the operation in the RFC6902. The addition isn't
too big (for the json_patch_apply() function), as part of the heavy lifting
is also done by JSON pointer logic.
All the ops were tested with the test-cases defined at:
https://github.com/json-patch/json-patch-tests
RFC6902: https://tools.ietf.org/html/rfc6902
Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>
