fix: pacs008 format fix

[Justus-at-Tazama]

SPDX-License-Identifier: Apache-2.0

What did we change?

• Updated the pre-request script for the rule-901 end-to-end test
  • Re-organized the pre-request script to separate into prep, config and utils sections
  • Updated the pacs008 root object (added the missing Trf)
  • Updated the Othr object in all messages to an array
• Updated the tests to implement the updated pacs.008 object
• Updated readme.md
  • Updated documentation for CRSP renaming
  • Updated documentation for API versioning
  • Updated documentation for channel and transaction config removal
  • Updated documentation for API endpoint rationalization

Why are we doing this?

• Changes to the code required changes to the tests. Changes to the code is documented here: https://github.com/frmscoe/tms-service/issues/177

How was it tested?

• [X] Locally
• [ ] Development Environment
• [ ] Not needed, changes very basic
• [ ] Husky successfully run
• [x] Unit tests passing and Documentation done