Update Manage Assistants page

[philipperolet]

As per here

Changes including (but check figma for others)

• The view shows Company assistants but also Shared and Personal
• It allows edition of the gallery
• Search is on all published assistants

Note: the Archived tab is out of scope of this card (other card) Depends on #3265

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Full figma (source of truth)

Full issue

[philipperolet]

Even clearer specs via the prototype

[philipperolet]

Note: the "Personal" tab has been discussed, convenience path for builders to update their assistants (cf the issue)

[philipperolet]

Note: also cf issue => 'shared' tab uses asisstant preview component, other tabs use lists, as per figma

[flvndvd]

@philipperolet what part are we missing from https://github.com/dust-tt/dust/issues/3265 to start this issue?

[philipperolet]

cf our slack discussion -> it's the same as #3274 , the dependency is product only. The task can be started, but should not be merged before #3265