ChangesetForm: Only allow changeset as argument, removing auto mode

[betocantu93]

ChangesetForm Refactor

This PR aims to provide more simple yet flexible api for ChangesetForm component.

The component serves as a lightweight mechanism for common tasks, like preventing browser native event reload on submit, persisting or rolling back changes to the changeset and providing contextual components with some predefined args like @changeset to all types of inputs, and so, preventing typos and boilerplate needed in order to support ChangesetForm Fields

It builds on top of a new utility/ergonomic component called <ChangesetForm::Context /> which serves as a way to pass down common args like the changeset to all of the types of inputs. This allows the client to optionally use it to build custom forms without much hassle.

This PR also introduces a new feature and a breaking change.

Feature:

1. You can now pass new changesets for completely reset the form.

Breaking change:

Previously we had two "modes":

1. Manual mode: passing down a changeset to the component via @changeset
2. Auto mode: passing down an object or so via @model and optionally @validations

Auto mode is deprecated, now you must provide a changeset to the component, you can easily do it by using the changeset helper

Before:

<ChangesetForm @model={{this.model}} @validations={{this.validations}} />

After:

<ChangesetForm @changeset={{changeset this.model this.validations}} />

[josemarluedke]

Thanks for working on this.

This is an interesting use case. I think with a few changes, you can use the changeset args.

[josemarluedke]

I think you need a correspondent TS/Js file here, I'm not sure if template-only components work in addons.

[betocantu93]

I think we are good, reference: https://discuss.emberjs.com/t/can-addons-use-template-only-components/17399/6?u=betocantu93

[josemarluedke]

Changes are looking real good!

Can you also update the docs demos to match this refactor?

[josemarluedke]

Looking good! Let's try to get CI green, then we should be ready to ship.

[josemarluedke]

Thank You @betocantu93 for your work on this.