[NT-1270] Creator Pledge Info Navigation Bugfix

[justinswart]

📲 What

Fixes a bug that was preventing creators from being able to navigate to pledge info from comment and backing activity cells.

🤔 Why

These regressions were introduced when we deprecated BackingViewController, these were two navigation paths that we hadn't discovered for a creator to navigate to a view a pledge.

🛠 How

• When navigating from a comment cell we make a quick network call to fetch the Backing from the v1 API and then pass its Project and Backing IDs to ManagePledgeViewController.
  • Note we are doing this as an interim solution with the given time constraints, there is no error handling on this request and it will seemingly do nothing if it fails.
• This PR also removes BackingViewModel and BackingViewModelTests which should have been removed along with BackingViewController. I'm pretty sure they were 🤔, perhaps a bad merge reintroduced these.

✅ Acceptance criteria

Log in as therealnativesquad, navigate to the creator dashboard, tap through to activities on a project.

• Tap Pledge info on a pledge activity cell, this should navigate to ManagePledgeViewController.
• Tap Pledge info on a comment activity cell, this should navigate to ManagePledgeViewController.

[nativeksr]

	1 Warning
⚠️	Big PR

Generated by 🚫 Danger

[jgsamudio]

Looks good 👍