TNZ-32337 - Add expiring licenses check script and configuration

[wayneadams]

This pull request introduces a new script and accompanying configuration file for checking expiring licenses. The script is designed to be flexible, allowing for various optional parameters to tailor the behavior of the license check.

Key changes include:

New Script for Expiring Licenses Check:

• Added a new Bash script tasks/expiring-licenses.sh to check for expiring licenses with configurable parameters such as EXPIRES_WITHIN, STAGED, and DEPLOYED.

Configuration for the New Script:

• Created a new YAML configuration file tasks/expiring-licenses.yml to define the inputs, parameters, and execution path for the expiring licenses check task.
• This file includes detailed comments explaining the purpose and usage of each parameter.
• Introduce a new script to check for expiring licenses and a corresponding YAML configuration file.
• The script captures output based on specified parameters, reports any licenses that are expiring within a defined timeframe, and exits with exit 1.

DO NOT MERGE UNTIL

• TNZ-32335-License enforcement changes in om cli pivotal-cf/om#683

[wayneadams]

DO NOT MERGE until pivotal-cf/om#683 is merged and released