Nfts attribute read interface (#13349)

* 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>

substrate/Cargo.lock

@@ -3558,6 +3558,7 @@ dependencies = [
  "pallet-mmr",
  "pallet-multisig",
  "pallet-nfts",
+ "pallet-nfts-runtime-api",
  "pallet-nis",
  "pallet-nomination-pools",
  "pallet-nomination-pools-benchmarking",
@@ -6038,6 +6039,16 @@ dependencies = [
  "sp-std",
 ]
 
+[[package]]
+name = "pallet-nfts-runtime-api"
+version = "4.0.0-dev"
+dependencies = [
+ "frame-support",
+ "pallet-nfts",
+ "parity-scale-codec",
+ "sp-api",
+]
+
 [[package]]
 name = "pallet-nicks"
 version = "4.0.0-dev"