Get featuredImage from assets/ dir or page bundles

[Tempystral]

Prerequisites

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• [x] This pull request adds a feature.

Description

This change allows the featuredImage front matter param to reference images in both the assets/ directory as well as in a page bundle

The order of arguments in the or statement implies a preference for bundled resources first, then the assets directory, then the static directory, which is in order of decreasing specificity and puts the assets pipeline first, if a resource can be found there.

Issues Resolved

https://github.com/luizdepra/hugo-coder/issues/758

Checklist

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General

• [x] Describe what changes are being made
• [x] Explain why and how the changes were necessary and implemented respectively
• [x] Reference issue with #<ISSUE_NO> if applicable

Contributors

• [x] Add yourself to CONTRIBUTORS.md if you aren't on it already