Improve the "provisioning" script (setup-system.sh)

[tokk-nv]

• Make script current-directory-agnostics
• Handle other Jetson (other than Jetson AGX Orin)
• Handle Jetson with L4T entirely installed on SSD (no need to mount)
• Install Docker

[OriNachum]

@tokk-nv
Thank you for improving it!

I will run it locally (On Super Nano - it was originally written on it) tonight.
Do you plan to fix all checkboxes in this PR, or make a series of PRs?

[OriNachum]

@tokk-nv
While at it, I'm running it "fresh" on AGX Orin and I found some issues:

1. File .env and .env_sample are on root, but the script is in the scripts folder.
2. The script runs on loops.
3. Changes not applied: zram, swap, docker.
4. List of power options are for Super Nano, not AGX Orin.

Should I wait for your changes, merge to yours, or merge to original?

[dusty-nv]

@OriNachum I'll ping Chitoku tomorrow to either get back to you about this or turn you loose on it.

The other scripts like build.sh and run.sh will move under scripts/ too, we had previously attempted it and had to revert until some docs get updated, but it was not just your scripts that I was hiding away under there.

The discussion about the .env location...

There will also be a static copy of the docker-compose templates exported under stacks/ in the repo, parameterizable by .env

Should they be the same .env then? Or not because they are separate processes, one is a one-time setup, the other is everytime a stack gets run.

[OriNachum]

@dusty-nv @tokk-nv I saw Chitoku already merged? I have the continuation of the PR and pending review of both/either

Split to each domain, and easy to add docker install, too.
It's tested on agx-emmc, agx-emmc-nvme and agx-nvme
I want to merge before continuing