[Task] Create core for Databases API

[pingu2k4]

Task Details

• [x] Requests created
• [x] Responses created
• [x] Internal Refit interface created, along with correct order for each endpoint
  • [x] Server
  • [x] Client
• [x] Api and interface created - Use Obsolete attribute in interface, and Exclude from code coverage in class
  • [x] Server
  • [x] Client
• [x] Tests for all requests and responses
• [x] Double check all requests and responses have full xml docs

[pingu2k4]

• [x] Implement Visitor Pattern for Attributes to make it easier to process a list of them.

[pingu2k4]

• [x] Add utils for Permissions, similar to Query and then convert all existing Permissions over