feat: create an install script for abctl

[michel-tricot]

Currently works for macos & linux (tested on debian&ubuntu).

Linux install is very naive, no use of packagers, just downloading the binary and installing on /usr/local/bin. Same on macos if brew is not installed.

The script can be use as is or through:

curl -LsfS https://get.airbyte.com | bash -

This would make for a VERY simple quickstart alongside abctl

Features:

• macos install (brew & simple binary cp). Supports intel & arm.
• linux install (simple binary cp).
• telemetry (install success and failed)
• naive check on the binary to consider the install successful instead of just script termination (can abctl be called)

Todo:

• support wsl2 on windows
  • early test, we pbly don't need the window binary and just rely on Linux bins running in wsl2
• support yum & deb packaging
• more testing?

Notes:

• ulid looks valid but semantically it doesn't really follow the spec
• When using sudo on Linux we recreate a telemetry id instead of reusing the one created during abctl install
  • not true. sudo uses the caller's environment