[K7 Navigation] Switch from app drawer to collapsible side nav for top navigation

[alexfrancoeur]

We plan on redesigning the homepage (#25734) to be a bit more easier to consume and move away from the focus on navigation. In order for that to be successful, we need to focus on the actual navigation of Kibana as well.

We continue to add more applications to Kibana. In a few recent discussions with the design team we decided that an app drawer simply cannot scale with the functionality needed to improve navigation. In order to make this experience better, there are a few features that we need in introduce.

• A collapsible side navigation to replace the app drawer
• The ability to search / filter on your saved objects & applications [K7 Navigation] Search and filter on applications and saved objects #25737
• The ability to pin saved objects and applications to your navigation menu. This will allow users to focus on applications, dashboards and workpads that are crucial to their daily tasks. [K7 Navigation] Pin applications and saved objects to navigation #25738
• A collapsible "Recently viewed" group to jump back in where you left off [K7 Navigation] Add recently viewed to new navigation #25741
• Pinning the menu itself. We did discuss during the design talks but I'm not sure where we landed. This is mean to address the one click workflow as described here

Bare minimum, the design team can add the navigation and we can tackle the additional functionality in minor releases shortly after.

cc: @AlonaNadler

[elasticmachine]

Pinging @elastic/kibana-platform

[elasticmachine]

Pinging @elastic/kibana-design

[alexfrancoeur]

Updated the description with the pinning menu functionality we discussed. I can open another issue for it if it's not something the design team can handle initially @ryankeairns

[snide]

PR for this is underway in EUI. We'll be doing implementation on the Kibana side next week. elastic/eui#1427