MESH-2096/allow-sc-deploy-as-child-id

[HenriqueNogara]

Allows a contract to be deployed as a primary key of a child identity.

changelog

new features

• Adds the following extrisincs: instantiate_with_code_as_primary_key, instantiate_with_hash_as_primary_key;

modified logic

• on_instantiate_transfer if contract_did is different from the caller's did, also check if its parent match the caller's identity;

[codecov]

Codecov Report

Merging #1548 (05d0902) into develop (9734963) will decrease coverage by 0.03%.
The diff coverage is 57.57%.

@@             Coverage Diff             @@
##           develop    #1548      +/-   ##
===========================================
- Coverage    58.58%   58.55%   -0.03%     
===========================================
  Files          142      142              
  Lines        32104    32118      +14     
===========================================
  Hits         18807    18807              
- Misses       13297    13311      +14     

Files	Coverage Δ
pallets/identity/src/keys.rs	86.73% <60.00%> (-0.50%)	⬇️
pallets/weights/src/polymesh_contracts.rs	28.98% <55.55%> (+3.98%)	⬆️

... and 5 files with indirect coverage changes