Assign the correct version for deployed decisions and DRGs

[saig0]

Description

When a DMN is deployed then we need to set the current version of the deployed decision and DRG. The latest version can be determined by the state that stores the deployed decisions and DRGs.

• extend the state to fetch the latest version of the DMN resource by the ID of the decision/DRG
• increment the version and update the state if the DMN resource is changed, i.e.:
  • if the checksum is different, or
  • if the resource name is different
• don't increment the version if the DMN resource is equal with the latest version
• write the version in the decision record and DRG record
• reject deployment
  • if multiple decisions have the same decision id
  • if multiple DRGs have the same decision requirements ID

blocked by #8069