Enhancement: Allow to specify the content card fields

[estruyf]

Based on the feedback, it would be good to enhance which fields/values are used for the content cards.

For instance, changing the title field to another field value.

Discuss link: https://discord.com/channels/992409023607476224/1107814781295022100/1107814785220890684

[estruyf]

New settings have been added:

"frontMatter.dashboard.content.card.fields.title": "altTitle", // string or null (null to hide the title)
"frontMatter.dashboard.content.card.fields.description": "altDescription", // string or null (null to hide the description)
"frontMatter.dashboard.content.card.fields.state": true, // Show/hide the state/draft status. Set to false to hide it.
"frontMatter.dashboard.content.card.fields.date": false, //  Set to false to hide the date.

This feature has been added to the latest beta version.