feat: add interfaces & error for psp22

[chungquantin]

Interfaces

• PSP22
• PSP22Mintable
• PSP22Burnable
• PSP22Metadata
• Management

Error

• Implementation
• Test

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.47%. Comparing base (b653091) to head (8fc8d07).
Report is 1 commits behind head on main.

@@            Coverage Diff             @@
##             main     #297      +/-   ##
==========================================
- Coverage   52.22%   51.47%   -0.76%     
==========================================
  Files          47       48       +1     
  Lines        4823     4894      +71     
  Branches     4823     4894      +71     
==========================================
  Hits         2519     2519              
- Misses       2255     2326      +71     
  Partials       49       49              

see 6 files with indirect coverage changes

[Daanvdplas]

Looking good, a few things that need to be addressed. It would be good also to remove the changes in terms of the example contract. This can be added in a separate PR to this PR which adds the example contract. Hereby other reviewers have an easier time reviewing the rest.

[Daanvdplas]

Some mini nitpicks.