Support custom filenames with CSV file for interesting_files module

[ckuttruff]

Simple addition to allow files to be overridden. This has two benefits:

• more efficient if just looking for a smaller subset of files (eg: just robots.txt)
• more flexible to allow for custom file searches

Changes are pretty straightforward, but this is my first attempt at a recon-ng contribution, so any feedback is very welcome. I believe I should have everything set properly in terms of indexing, but sincere apologies if I missed anything there

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• [ ] Bug Fix
• [ ] New Module
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• [x] New Feature for existing module

Checklist For Approval

• [x] Updated the meta dictionary for the module.
  • If bug fix, updated the version.
• [x] Indexed the module
• [x] Added the index to the modules.yml file
• [x] Made the most out of the available mixins.
• [x] Ensured the code is PEP8 compliant with pycodestyle or black.

[ckuttruff]

@lanmaster53 thanks for comments and apologies again for initial oversights. I've pushed up some fixes to read from a CSV and moved the default options into there to have a clear example for how folks can override.

Did some thorough local testing and things are working as expected in terms of verification, etc.

[lanmaster53]

@lanmaster53 thanks for comments and apologies again for initial oversights. I've pushed up some fixes to read from a CSV and moved the default options into there to have a clear example for how folks can override.

Did some thorough local testing and things are working as expected in terms of verification, etc.

No worries or apologies necessary. It's all party of the process. Taking a look at the changes now.