Bug 32939: Have a generic fetch function for POST and PUT requests in vue modules

Bug 32939: Have a generic fetch function for POST and PUT requests in vue modules

Rebase to 32806 and prior to 32925. Squash
More updates. Ready for review, for now.

JD amended patch:
* prettier
* remove changes to AgreementRelationships.vue and EHoldingsLocalPackageAgreements.vue to have less files to update in upcoming patches

Signed-off-by: Matt Blenkinsop <matt.blenkinsop@ptfs-europe.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>