Add errno reporting to bad file reads

[hellkite500]

Additional error reporting when file reads fail to occur, this provides additional context as to why the failure happens.

Changes

• Capture and report the errno when certain file reads fail

Todos

• May need to check other possible locations of file read errors and extend their error messaging similarly

Checklist

• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code can be automatically merged (no conflicts)
• Code follows project standards (link if applicable)
• Passes all existing automated tests
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future todos are captured in comments
• Project documentation has been updated (including the "Unreleased" section of the CHANGELOG)
• Reviewers requested with the Reviewers tool ➡️

Target Environment support

• Linux
• MacOS