Updates for HERD & Shep v0.4 APIs
All pages updated to include new information from the new API version, including:
- Crates and links at shep level
- Masks, port operating modes
- On-board FireFly-FPGA, FireFly-frontpanel and FPGA-FPGA connections
- Properties
- Duration of monitoring updates
Also added devcontainer config for VSCode.