The shell.nix file is used for both flake and non-flake invocations. The lock file is also set at a version where the project works.
Note the none-flake method will follow the version of the system and isn't guaranteed to work on older installations if they haven't been updated in a while.
Added Documentation for using Nix package manager for development ./Documentation/LinuxDevelopmentSetupUsingNix.md
Signed-off-by: Ayman Jundi <ajundi@gmail.com>