Add policy pack - Tagging Helpers for Cost_Center

[vkumbha]

Control objective Example of the cost center tags, i imagine a regex that would look for anything matching *cost*center* in a case insensitive way and the setting the tag key to Cost_Center

• [x] AWS - https://github.com/turbot/guardrails-samples/pull/867
• [x] Azure - https://github.com/turbot/guardrails-samples/pull/868
• [x] GCP - https://github.com/turbot/guardrails-samples/pull/869 (Note: GCP Labels does not allow capital letters. So, the tag key would be cost_center

  Invalid field "user_labels_list"; key "Cost_Center" does not conform to regular expression "[\p{Ll}\p{Lo}][\p{Ll}\p{Lo}\p{N}_-]{0,62}"; first character "C" is not a non-uppercased letter (Unicode character class Ll or Lo)

Remediation The remediation action(s) to satisfy the control objective.

Categories Proposed primary category and categories from the available list of categories.

Additional context Add any other context about the problem here.