Add a tool to config NVIDIA PPCIE/CC mode manually and automatcially

[h4x3rotab]

Current we use those command to switch modes:

PPCIE mode:

for i in $(seq 0 $(($(lspci -nn | grep -c "10de") - 1))); do sudo python3 ./nvidia_gpu_tools.py --set-cc-mode=off --reset-after-cc-mode-switch --gpu=$i; done
for i in $(seq 0 $(($(lspci -nn | grep -c "10de") - 1))); do sudo python3 ./nvidia_gpu_tools.py --set-ppcie-mode=on --reset-after-ppcie-mode-switch --gpu=$i; done

CC mode:

for i in $(seq 0 $(($(lspci -nn | grep -c "10de") - 1))); do sudo python3 ./nvidia_gpu_tools.py --set-ppcie-mode=off --reset-after-ppcie-mode-switch --gpu=$i; done
for i in $(seq 0 $(($(lspci -nn | grep -c "10de") - 1))); do sudo python3 ./nvidia_gpu_tools.py --set-cc-mode=on --reset-after-cc-mode-switch --gpu=$i; done

Disable CC at all:

for i in $(seq 0 $(($(lspci -nn | grep -c "10de") - 1))); do sudo python3 ./nvidia_gpu_tools.py --set-cc-mode=off --reset-after-cc-mode-switch --gpu=$i; done
for i in $(seq 0 $(($(lspci -nn | grep -c "10de") - 1))); do sudo python3 ./nvidia_gpu_tools.py --set-ppcie-mode=off --reset-after-ppcie-mode-switch --gpu=$i; done

We should add it to dstack. So users don't need to manually install nvidia_gpu_tools.