[FEATURE REQUEST] Complete installation script

[LdDl]

Is your feature request related to a problem? Please describe.
We need to make out-of-a-box installation script for dependencies: OpenCV 4.x.x / Darknet / CUDA / cuDNN

Describe the solution you'd like
It could be Makefile or even bash script.
Most difficult would be to implement NVidia CUDA setup due the authentication process (currently user should be logged in to Nvidia's site to download CUDA or cuDNN)

Describe alternatives you've considered
If we won't be able to handle CUDA / cuDNN setup, we can make another issue.

Additional context
Keep in mind to have a document with dependencies: OpenCV 4.x.x / Darknet (AlexeyAB's fork on certain commit) / CUDA / cuDNN.
Also we are not targeted for windows users since golang+cuda - is a pain (for current state 19.02.2021)