Add server picker in "Examples"

[MGaetan89]

Pull request

Description

When entering a URN in Examples in pillarbox-demo, it is now possible to select a specific backend configuration (IL/SAM, CH/WW).

Changes made

• Expose the method to get the list of servers from MainNavigation.
• Add a server picker in Examples.

Screenshot

Checklist

• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).

[github-actions]

Code Coverage

Overall Project	48.46%	🟢

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