196 add new roles and permissions

[ndkazu]

Added Representative Role to the role pallet:

The hypthesis is that a professional applies for a job as Representative through the pallet role. Representatives pending list contains all infos available to the owners of an asset, so that they can study the profiles (do we need a metadata field?) and make a choice through the voting system in asset_management.

• This role has it's own Approval wait list as the approval process is different from the one used for servicers & sellers
• Available fields in the Representative struct are shown below:

  pub struct Representative<T: Config> {
  pub account_id: T::AccountId,
  pub age: BlockNumberOf<T>,
  pub activated: bool,
  pub assets_accounts: Vec<T::AccountId>,
  }

• The asset_accounts represent the asset's virtual accounts which are under the responsability of the representative

Next steps:

• [x] Testing of the Representative role creation, up to the integration into the pending list

• Develop the voting system in asset_management/Approval system of the representative role

• Finalise the Representative Role creation inside the Pallet asset_management

[codecov-commenter]

Codecov Report

Merging #200 (531e293) into main (9ce416e) will decrease coverage by 0.07%. The diff coverage is 80.64%.

@@            Coverage Diff             @@
##             main     #200      +/-   ##
==========================================
- Coverage   78.97%   78.89%   -0.08%     
==========================================
  Files          49       50       +1     
  Lines        4280     4388     +108     
==========================================
+ Hits         3380     3462      +82     
- Misses        900      926      +26     

Impacted Files	Coverage Δ
pallets/asset_management/src/lib.rs	0.00% <0.00%> (ø)
pallets/voting/src/lib.rs	79.32% <ø> (ø)
runtime/src/lib.rs	12.22% <ø> (ø)
pallets/roles/src/lib.rs	74.13% <75.86%> (-0.31%)	:arrow_down:
pallets/roles/src/functions.rs	90.81% <87.23%> (+0.81%)	:arrow_up:
pallets/roles/src/tests.rs	100.00% <100.00%> (ø)
pallets/roles/src/types.rs	93.87% <100.00%> (+3.25%)	:arrow_up:

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[cuteolaf]

Add Notary Role

• [x] Add notary role in pallet-roles
• [x] Add test for notary