… paths for Atomic Red Team

**Added:**
- Added variables for PowerShell version and installation path.
- Included common, Debian-specific, and RedHat-specific package lists for installation.

**Changed:**
- Refactored PowerShell installation to use a generic approach with architecture mapping.
- Updated `invoke-atomictest.yml` to use the `pwsh` command without absolute paths.
- Simplified `setup-linux.yml` to streamline PowerShell setup and remove old installation methods.

**Removed:**
- Removed old PowerShell installation tasks specific to Ubuntu, Amazon Linux, and CentOS.

**Changed:**
- Standardized variable names with `ansible_atomic_red_team_` prefix for consistency.
- Updated `example-playbook.yml` to use the new standardized variable names.
- Moved `update-art-tids.sh` script from `vars` to `files` directory and set executable permissions.
- Enhanced `gather-art-tids.yml` task to create a temporary directory, copy the emergency bash script, and gather ART TIDs into a YAML file in the temporary directory.
- Modified `invoke-atomictest.yml` to set a fact for `prereq_check_passed` and conditional execution of test and cleanup tasks based on this fact.
- Updated `setup-linux.yml` to include installation of Invoke-ART, setting up the PowerShell profile, and added additional packages for setup.
- Removed `update-art-tids.sh` script from `vars` directory as it has been moved to `files`.
- Added a timeout variable `ansible_atomic_red_team_timeout` for ART tests in `defaults/main.yml`.

**Removed:**
- Removed unused variables `atomic_red_team_common_install_packages`, `atomic_red_team_debian_specific_packages`, and `atomic_red_team_redhat_specific_packages` from `vars/main.yml`.