Test for keywords

[yceballost]

Adds a new workflow to check for keywords in our icon files. It is important to ensure that all icons have corresponding keywords in our JSON file, as this helps with searchability and organization within our project.

The workflow is triggered on pull requests targeting the production branch, and it runs whenever changes are made to files in the "icons" directory. The workflow performs the following steps:

1. Lists all SVG files in the "icons" directory and extracts their filenames.
2. Reads the JSON file containing the keywords for the icons.
3. Extracts the keywords from the JSON file and saves them in a separate file.
4. Compares the icon filenames with the keywords in the JSON file and checks for any missing icons.
5. Cleans up temporary files created during the process.

By adding this workflow, we can ensure that all icons have associated keywords, which improves the organization and searchability of our project.