Y24-166-2 - Add AssetAudits and VolumeUpdates to the V2 API

[sdjmchattie]

User story
In order to move Asset Audits over to SS API v2, the endpoints it currently uses on v1 need to be added to v2. This includes AssetAudits and VolumeUpdates. These should be added in the most restrictive manner to begin with. That means being able to create them (because that's what Asset Audits app does) and not be able to update them (because we don't need that yet).

Who are the primary contacts for this story
Stephen Hulme and Stuart McHattie

Who is the nominated tester for UAT
PSD

Acceptance criteria
To be considered successful the solution must allow:

• Create AssetAudit records via the API v2.
• Create VolumeUpdate records via the API v2.
• Do not allow either to be modified after creation.

References
This story has a non-blocking relationship with:

• Enables the deployment of Y24-166 - As a TL I would like the calls from Asset Audits to SequenceScape v1 API to either be moved to to SequenceScape v2 API or documented for further review so that we can start deprecating v1 API. asset_audits#621