DashlistPanel: Add options to include time range and variable values

[VictorColomb]

What is this feature?

This PR adds two new options to the Dashboard List panel:

• Time range - option to propagate the currently selected time range to the dashboard links,
• Variable values - option to propagate the currently selected template variables to the dashboard links.

This feature is the equivalent of the already existing options on Dashboard Links.

Why do we need this feature?

This feature increases coherence between Dashboard Links and the Dashboard List panel.

This feature fluidifies user interaction and improves user experience when navigating between dashboards, all the while using the Dashboard List panel which imho is more user-friendly than dashboard links.

Which issue(s) does this PR fix?:

Fixes #65129

Special notes for your reviewer:

Please check that:

• It works as expected from a user's perspective.
• If this is a pre-GA feature, it is behind a feature toggle.
• The docs are updated, and if this is a notable improvement, it's added to our What's New doc.
• There are no known compatibility issues with older supported versions of Grafana, or plugins.
• It passes the Hosted Grafana feature readiness review for observability, scalability, performance, and security.

[CLAassistant]

All committers have signed the CLA.

[imatwawana]

Made some wording edits for style and clarity.

[imatwawana]

LGTM!

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[JoaoSilvaGrafana]

lgtm!