Collection Manager: improvements

[lakardion]

@paribaker Can you fill in here what problems you encountered with the current version of the collection manager?

I believe your request about the immutability handling is how it should be working? So probably the getter is not the right approach for the collection manager to work with Vue

We're doing a spread of the list on every update so the ref should change:

tn-models-fp/src/collection-manager/index.ts

Line 40 in acfd9c2

list = [...(append ? list : []), ...data.results]

[paribaker]

In theory this should work but the Vue elements do not seem to update! A temporary workaround for users is to use
triggerRef(objct)
I wonder if an Object.assign(myCollection, myCollection) would work --- I tried this in the vue component but it does not!