Show search result counts

[benyn]

When searching in Broot, it would be helpful to see the number of matches found, ideally in two places:

• Status bar: Total count (before h:n gi:y?) — similar to how fzf shows total search result count above the search bar
• Count column: Count of matches within each directory/subtree — this would go beyond fzf's capabilities and be only possible in Broot's tree view

If this feature exists or has been requested already and I missed in the documentation, blog posts, or this repo, I apologize. Please point me in the right direction.