feat(nfts): add nonfungibles runtime implementation

[chungquantin]

Description

Implement the runtime pallet pallet-api/nonfungibles for the #259. This implementation follows the discussed NFT spec with the forked pallet-nfts.

pallet-nfts

• [pallet-nfts] Adding two storage items.
  • AccountBalance: Keep track of the total number of collection items an account has.
  • Allowances: Keep track of the collection approval status for a delegated account.
• [pallet-nfts] [AccountBalance] Update existing methods' logic
  • do_transfer: Increase account balance of sender and decrease account balance of dest on transferred.
  • do_mint: Increase account balance of minter on minted.
  • do_burn: Decrease account balance of owner on burnt.
• [pallet-nfts] [Allowances] Update existing methods' logic
• [pallet-nfts] Update existing events' structure.
• [pallet-nfts] Rerun benchmarking

pallet-api/nonfungibles

• Implement basic functionalities of the pallet-api/nonfungibles.
• Configure pallet-nfts and pallet-api/nonfungibles to Test runtime in mock.rs
  • refactor: pallet tests of pallet-api/fungibles to use an updated Account instead of u8. (.e.g, account(ALICE))
• pallet unit testing with pallet-nonfungibles.
• Add non-fungibles feature to devnet. Merge this PR first: refactor: generic extension #218
• Integration unit testing non-fungibles API.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 93.58025% with 26 lines in your changes missing coverage. Please review.

Project coverage is 53.85%. Comparing base (52fb7f0) to head (184ae45).

Files with missing lines	Patch %	Lines
pallets/api/src/nonfungibles/mod.rs	67.56%	14 Missing and 10 partials ⚠️
pallets/api/src/nonfungibles/types.rs	0.00%	2 Missing ⚠️

@@            Coverage Diff             @@
##             main     #339      +/-   ##
==========================================
+ Coverage   51.60%   53.85%   +2.24%     
==========================================
  Files          48       51       +3     
  Lines        4910     5205     +295     
  Branches     4910     5205     +295     
==========================================
+ Hits         2534     2803     +269     
- Misses       2327     2343      +16     
- Partials       49       59      +10     

Files with missing lines	Coverage Δ
pallets/api/src/fungibles/tests.rs	99.72% <100.00%> (+0.02%)	⬆️
pallets/api/src/mock.rs	100.00% <100.00%> (ø)
pallets/api/src/nonfungibles/tests.rs	100.00% <100.00%> (ø)
pallets/api/src/nonfungibles/types.rs	0.00% <0.00%> (ø)
pallets/api/src/nonfungibles/mod.rs	67.56% <67.56%> (ø)