feat(gpu): add GPU support for comfyui, photoprism, libretranslate

Added var_gpu=yes to ct scripts:
- comfyui.sh - Stable Diffusion (CRITICAL: had GPU selection but no passthrough!)
- photoprism.sh - TensorFlow face detection + FFmpeg transcoding
- libretranslate.sh - PyTorch ML translation

Added setup_hwaccel to install scripts:
- comfyui-install.sh
- photoprism-install.sh
- libretranslate-install.sh

These apps use PyTorch/TensorFlow for ML and benefit significantly
from GPU acceleration (Intel XPU, AMD ROCm, NVIDIA CUDA).

ct/comfyui.sh

@@ -13,6 +13,7 @@ var_disk="${var_disk:-25}"
 var_os="${var_os:-debian}"
 var_version="${var_version:-13}"
 var_unprivileged="${var_unprivileged:-1}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables

ct/libretranslate.sh

@@ -13,6 +13,7 @@ var_disk="${var_disk:-20}"
 var_os="${var_os:-debian}"
 var_version="${var_version:-13}"
 var_unprivileged="${var_unprivileged:-1}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables

ct/photoprism.sh

@@ -13,6 +13,7 @@ var_disk="${var_disk:-8}"
 var_os="${var_os:-debian}"
 var_version="${var_version:-13}"
 var_unprivileged="${var_unprivileged:-1}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables

install/comfyui-install.sh

@@ -12,6 +12,7 @@ catch_errors
 setting_up_container
 network_check
 update_os
+setup_hwaccel
 
 echo
 echo "${TAB3}Choose the GPU type for ComfyUI:"

install/libretranslate-install.sh

@@ -12,6 +12,7 @@ catch_errors
 setting_up_container
 network_check
 update_os
+setup_hwaccel
 
 msg_info "Installing dependencies"
 $STD apt install -y \

install/photoprism-install.sh

@@ -12,6 +12,7 @@ catch_errors
 setting_up_container
 network_check
 update_os
+setup_hwaccel
 
 msg_info "Installing Dependencies (Patience)"
 $STD apt install -y \