Addition of various functionality for the toggle-switch component

[brenner-company]

Within Kaleidos we could use the following functionality for the AuToggleSwitch component:

• The correct visualisation of the component if there is no label defined (this issue has already been fixed for AuControlCheckbox and AuControlRadio).
• The possibility of defining a certain alignment for the label (E.g. showing the label on the left of the actual toggle-switch).
• The possibility of defining a loading state for the component (similar to AuButton).

Together with some general adjustments:

• Quick refactor from margin-based spacing to gap (already within a few other components).

Is this something that can be added to the component? If yes, I can surely help with that.

[brenner-company]

Example of the loading state functionality, currently implemented within Kaleidos:

[Windvis]

👍 for most of the bullets, but I'm not sure I'm a fan of adding a loading state here. That seems like a very niche use-case since usually switching the toggle doesn't start an async action.

I think it might be better to support something like this instead?

<AuToggleSwitch>
  {{#if this.isRunning}}
    <AuLoader />
  {{else}}
    Te handtekenen
  {{/if}}
</AuToggleSwitch>

(Pseudocode, but you get the idea)

If the pattern also becomes more common in other Appuniversum apps, we can then add it to the component itself.

[brenner-company]

👍 for most of the bullets, but I'm not sure I'm a fan of adding a loading state here. That seems like a very niche use-case since usually switching the toggle doesn't start an async action.

I think it might be better to support something like this instead?

<AuToggleSwitch>
  {{#if this.isRunning}}
    <AuLoader />
  {{else}}
    Te handtekenen
  {{/if}}
</AuToggleSwitch>

(Pseudocode, but you get the idea)

If the pattern also becomes more common in other Appuniversum apps, we can then add it to the component itself.

That is totally ok for us 👍 We thought the 'issue' was already more common within other apps.

I'll start on a PR for the remaining items today or tomorrow.