* feat: add custom and system attributes to Inspect

* feat: add nfts runtime api

* fix: pass std feature to runtime api

* fix: api copyright

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>

---------

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>