Fix typings to allow using interfaces over types

Works:
```typescript
type ActionBranches = {
    auth: AuthStateActions;
    editor: EditorStateActions;
    project: ProjectStateActions;
};
```
Does not work:
```typescript
interface ActionBranches {
    auth: AuthStateActions;
    editor: EditorStateActions;
    project: ProjectStateActions;
};
```

Breaks linter rule `interface-over-type-literal`.