[feat](terraform): add s3 module loader - WIP

[tarfeef101]

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Description

Adds a loader to download s3-hosted TF modules

Fixes #5895

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my feature, policy, or fix is effective and works
• New and existing tests pass locally with my changes

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Generated description

Below is a concise technical summary of the changes proposed in this PR:

Topic	Details
S3 Loader Implement	Implements a new S3Loader class to download Terraform modules from Amazon S3 buckets Modified files (1) checkov/terraform/module_loading/loaders/s3_loader.py Latest Contributors(0) User Commit Date
S3 Loader Integrate	Integrates the new S3Loader into the existing module loading system Modified files (2) checkov/terraform/module_loading/loaders/registry_loader.py checkov/terraform/module_loading/__init__.py Latest Contributors(2) User Commit Date maxamel feat-general-fix-proxy... February 06, 2025 lirshindalman feat-terraform-add-opt... January 01, 2025

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