feat(policies): disable color in policy report when writing to file

[elsapet]

Description

Disable color in report when we are writing to a file (i.e. avoid special characters in report)
Also some refactoring to move policy-report-specific methods to output/policies.go where they should have been in the first place

Output file before

Policy Report

=====================================
Policy list: 

�[90m- Logger leaking
�[0m�[90m- Application level encryption missing
�[0m

�[31mCRITICAL: �[0mLogger leaking policy breach with Personal data
�[90mLogger leaks detected
�[0m
�[94mFile: �[4m../../Desktop/example/services/log_contact.rb:3�[0m
�[0m
 1 logger.info(
 2   "contact city:",
�[35m 3 �[0m�[35m  user.city,�[0m
 4 )

Output file after

Policy Report

=====================================
Policy list:

- Logger leaking
- Application level encryption missing


CRITICAL: Logger leaking policy breach with Personal data
Logger leaks detected

File: ../../Desktop/example/services/log_contact.rb:3

 1 logger.info(
 2   "contact city:",
 3   user.city,
 4 )

...

Checklist

• I've added test coverage that shows my fix or feature works as expected.
• I've updated or added documentation if required.
• I've included usage information in the description if CLI behavior was updated or added.
• PR title follows Conventional Commits format

[swarmia]

✅  Linked to AMA-3270 · Handle summary when writing output to file
➡️  Part of AMA-3235 · Table format for policies
➡️  Part of AMA-2947 · OSS - Curio CLI