Align liquidity calculations for both the Settlement and Transfer Processes

[mdebarros]

Goal:

As a Mojaloop

I want to make the liquidity calculations & check-comparisons between the position account and the settled funds account as modified by the NDC, instead of between the position account and the NDC as part of the Settlement Process

so that liquidity calculations & checks are aligned for both the Settlement and Transfer Processes

This is a follow-up story to the following:

• DA Issue: Change the basis for the liquidity check design-authority-project#90.
• Initial PR for Transfer process: feat: update liquidity check central-ledger#899

Acceptance Criteria:

• Verify liquidity check comparison between the position account and the settled funds account as modified by the NDC, instead of between the position account and the NDC as part of the Settlement Process
• Utilise ML-Number library to handle all mathematical operations within the Settlement Gross Handler
  • model.transferSettlement.facade.updateTransferSettlement function

Complexity: High

Uncertainty: Medium

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Tasks:

• TBD [ @? ]

Done

• Acceptance Criteria pass
• Designs are up-to date
• Unit Tests pass
• Integration Tests pass
• Code Style & Coverage meets standards
• Changes made to config (default.json) are broadcast to team and follow-up tasks added to update helm charts and other deployment config.
• TBD

Pull Requests:

• TBD

Follow-up:

• N/A

Dependencies:

• N/A

Accountability:

• Owner: TBC
• QA/Review: TBC