Add VM config examples and Frigate NVR setup

vm-configs/:
- 100-frigate.conf.example: Frigate VM with Quadro P2200 #1, Coral USB, bays 1-8
- 101.conf.example: GPU VM with Quadro P2200 #2, bays 9-10
- 102.conf.example: Utility VM, bays 11-12

frigate/:
- docker-compose.yml: nvidia runtime + Coral USB passthrough, healthcheck
- config.yml: NVDEC hwaccel (preset-nvidia-h264), Coral USB detector,
  motion-based recording retain, per-object score thresholds

https://claude.ai/code/session_01TxTSnxDjgEVuNztdsWQjMD

vm-configs/101.conf.example

@@ -0,0 +1,35 @@
+# Proxmox VM 101 — General purpose with GPU
+#
+# Copy to /etc/pve/qemu-server/101.conf after filling in:
+#   - hostpci0: real PCI address of Quadro P2200 #2
+#   - scsi1–scsi2: real /dev/disk/by-id paths for bays 9–10
+
+agent: 1
+bios: ovmf
+boot: order=scsi0
+cores: 8
+cpu: host
+machine: q35
+memory: 16384
+name: vm101
+numa: 0
+ostype: l26
+scsihw: virtio-scsi-single
+sockets: 1
+
+# OS disk
+scsi0: local-lvm:vm-101-disk-0,cache=writeback,size=64G
+
+# Data drives — bays 9–10
+scsi1: /dev/disk/by-id/PLACEHOLDER_BAY9,size=0
+scsi2: /dev/disk/by-id/PLACEHOLDER_BAY10,size=0
+
+# Quadro P2200 #2
+# Replace XX:00 with real PCI address from gpu-passthrough-setup.sh output
+hostpci0: 0000:XX:00,pcie=1,x-vga=1
+
+# Network
+net0: virtio=BC:24:11:00:00:65,bridge=vmbr0,firewall=1
+
+# EFI disk
+efidisk0: local-lvm:vm-101-disk-1,efitype=4m,pre-enrolled-keys=0,size=4M