Packet capture viewer & folder tree polished

Packet captures

• Open captures, read PCAP and PCAPNG files, including gzip, Zstandard and LZ4 compressed captures, in the new packet capture viewer.
• Browse packets, page through the packet list with decoded headers, hex and a packet filter, or go straight to a packet number.
• Capture facts, the summary panel lists the format, packet count, time bounds, duration and interfaces in aligned columns.
• Quick view card, pressing Space on a capture shows its facts and progressive counts while the scan continues.
• Open in Wireshark, hand the capture to Wireshark from the toolbar when it is installed.
• Ready buttons only, the packet toolbar's paging, filter and scan buttons are enabled only when they can act.

Folder tree

• Consistent drive look, the folder tree matches the drive popup's presentation.
• Icons while resizing, overlay icons repaint correctly when the tree resizes.