Ft/national bank mw core connector

[Horac3]

Docs: Sequence diagrams completed
Chore: Implemented send money according to NBM specification
Tests: Tested and completed integration tests for the core connector

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
2 out of 3 committers have signed the CLA.

✅ elijah0kello
✅ Horac3
❌ root

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[elijah0kello]

closing this because there already exists another PR