fix(terraform): reduce parsing time for large TF plan files

[gruebel]

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

Description

• Added a json.laods() fallback for TF plan files, which are bigger than 50mb (the created ticket says 100mb, but currently it takes ~40sec to parse a 100mb file, compared to ~2-3sec via json.loads)
• Added a couple of logs for better troubleshooting
• Interestingly we also have a custom JSON parser, but it performs worse compared to the YAML loader 🤷
• Added some small performance improvements in the TF edge creation, which makes it ~20% faster for TF plan files and ~10% for HCL files 🚀

Fixes #3754

Checklist:

• My code follows the style guidelines of this project
• 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
• Any dependent changes have been merged and published in downstream modules

[nimrodkor]

Very nice!