ftrack 2ways Sync

[dee-ynput]

SubEpic of 🚀 Prod Trackers 2ways Sync

Strategy

ftrack addon must support two ways synchronization of all relevant data.
This includes syncronizing:

• One way sync of User (Users: Sync users #151)
• Entity attributes - anatomy and attributes values on entities (Sync attribute changes from AYON to ftrack #162)
• Statuses (Sync statuses from AYON to ftrack #160)
• Assignments (Sync assignments from AYON to ftrack #161)
• Comments (AYON to ftrack sync: Sync comments #173)

Out of this epic scope

• Versions and Reviewables - Multiple reviewables will only be possible in AYON, and ftrack only takes the 1st one. (Sync products, versions and reviewables #164)
• Hierarchy changes - created/removed/renamed folders and tasks (Sync hierarchy changes #163)
• Links ? [TBD]

For the start we'll only do one way for:

• Entity hierarchy (anatomy and entities themselves)
• Users
  But with full intention to do two way sync for them in this epic as well

NOTE

• To be able to support 2 way sync we need Entity change events: Be able to detect source of change ayon-backend#391 first.
• To be able to support comments sync we need Activities: Endpoint/s to get activities ayon-backend#429 .

Generic User Stories

(Applicable for each of the checkbox in the strategy section)

• As an Artist or Lead, when I [do something] in the production tracker, I want the changes to be visible in AYON.
• As an Artist or Lead, when I [do something] in AYON Activity Feed, I the changes to be visible in the production tracker.

• We will probably need multiple sync services for ftrack.
• We need to be able to create a version without a representation.

[tanh609]

Hullo, #125 might be relevant to this issue.

@sjt-rvx have a very clever idea of having an option to customize/select attribute for the attribute sync.