feat(vue-demo): JSON-LD example

[mdanilowicz]

Description

closes #530

Type of change

ToDo's

Screenshots (if applicable)

Additional context

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Name	Status	Preview	Updated (UTC)
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[BrocksiNet]

I like this PR a lot. Thx. 👍

Only two comments:

• Description has HTML inside and should only be text
• With JSON LD you can have multiple entries. Not only Product. A classic example would be Product + Breadcrumb in JSON LD. Should our small example support that possibility?

Also nice reference here.

[mdanilowicz]

I like this PR a lot. Thx. 👍

Only two comments:

• Description has HTML inside and should only be text
• With JSON LD you can have multiple entries. Not only Product. A classic example would be Product + Breadcrumb in JSON LD. Should our small example support that possibility?

Also nice reference here.

Ok I removed tags.
Regarding the breadcrumbs, there are no links in response so we should wait for the #139

The main goal of this task is to show - HOW. That is why there is a possibility of overriding the JSON by the additional param. Also, this is a template composable, so each app should have its own implementation of it.

[BrocksiNet]

Sure, we can also create a follow-up issue after merging this PR.
To improve the example when breadcrumbs are done. Like it. 👍