Implement connections list screen

[dfalbel]

Adresses #5107.

Demo usage:

Screen.Recording.2024-10-30.at.12.57.59.mov

TODO:

• Rename action bar for specific schema navigation component
• Initial implementation of the list connections view
• Implement styles for the list connections view
• Correctly design the action bar for the list view
• Allow deleting a saved connection
• Show only the selected connection in the schema view
• Secondary action bar in the schema view (with details about the selected connection instance)
• Don't show top level connection when exploring schema. Requires instances to always be in the expanded state - Ended up refactoring the cache structure.
• Connection Instances should send onChangeConnections event when their status changes.
• Resume connection modal
• Add Copy button behavior for the resume connection modal
• Add Edit button behavior for the connections modal
• Add Resume connections button behavior
• Refresh schema navigation action bar
• Bug: Refreshing causes the expanded state to be reset.
• Bug: Code is not being correctly restored when the IDE restarts.
• Fix heights for the List component - so it scrolls correctly in the presence of multiple connections.
• Make sure scrolluing works, and that we save scroll state
• %connection_view conn should direct to schema explorer view
• Remove filters for now
• localize button titles in action bars

Follow up PR:

• Improve the display of code in the Resume connections modal - turns out it's not that simple to plug a text editor within a modal: Resume connections modal should use a Text Editor #5219

[petetronic]

Let's wait until we branch for 2024.11, and once main is open for prerelease 2024.12 changes we can review and plan to merging this on main (likely tomorrow).