Support resolution of topic and event trees

[JGAntunes]

There should be an exposed interface that allows to resolve topic and event trees.

Things to consider:

• Probably interesting to have a similar API as - https://github.com/ipld/js-ipld (or at the very least useful to take a look at the project)
• Resolution should:
  • Be able to receive a from node
  • Be able to either resolve based on a relative number to the from node or to an absolute cid
  • The resolution must always have a max number of nodes to run through (we don't want to go on endlessly)