Extend FX Quotes to support Simple Routing = false

[PaulGregoryBaker]

Goal:

As a Mojaloop Community member making use of FX conversion in mojaloop
I want to ensure that the FX implementation POC is matured
so that it can be merged into master and ultimately included in a release of mojaloop and used.

Note: This story covers the harnening of the central services components that are associated with the fx quotes.

• The POC only catered for simple routing mode. This story needs to include the other routing mode.

Acceptance Criteria:

• Verify that error cases are mapped and documented.
• Verify that the integration test are added to test the error cases.
• Verify that unit test are added
• Verify that all mojaloop core standards are met

Note:
The current integration test harness is not great; May need to update with the integration framework that is running in Central Ledger

Complexity: <High|Medium|Low> > A short comment to remind the reason for the rating

Uncertainty: <High|Medium|Low> > A short comment to remind the reason for the rating

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Tasks:

• Prep database design
• Add migrations to CL repository
• Implement functionality
• Add unit tests
• Add integration tests

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:

• feat(mojaloop/#3885): extend fxquote functionality to persistant mode quoting-service#348
• chore: migration fixes central-ledger#1078
• feat(mojaloop/#3885): add migrations for storing fxQuotes central-ledger#1076

Follow-up:

• N/A

Dependencies:

• N/A

Accountability:

• Owner: TBC
• QA/Review: TBC