Vue3 migration: Explore view

[berggren]

This issue tracks the migration of the Explore view

• [x] Context search
• [x] event data-table
• [x] Search dropdown
• [x] Toggle star
• [x] Tag events (add/remove)
• [x] Barchart
• [ ] Timeline chips
• [ ] Upload timeline
• [ ] Add manual event
• [ ] Time Filters
• [ ] Select columns
• [ ] Comments
• [x] History graph
• [ ] Time bubbles (new expanded - need to fix another solution)
• [ ] Event detail