WIP: Polymesh v5 contracts (do not delete)

[Neopallium]

Add simple dividend support Polymesh Ink! API for Polymesh v5.x

[codecov[bot]]

Codecov Report

Merging #1506 (6c7ed94) into testnet (9301b52) will increase coverage by 0.00%. The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           testnet    #1506   +/-   ##
========================================
  Coverage    53.92%   53.92%           
========================================
  Files          146      146           
  Lines        31916    31916           
========================================
+ Hits         17210    17212    +2     
+ Misses       14706    14704    -2     

Files Changed	Coverage Δ
contracts/upgradeable-polymesh-ink/src/macros.rs	48.38% <100.00%> (ø)

... and 2 files with indirect coverage changes