ER: Create or find a script to find all files that are not part of the Jekyll build.

### Emergent Requirement - Problem
We probably have files that are no longer being used and we want to refactor them out of the build. At least one example is the file `guidepages.js` which is flagged with a [CodeQL alert](https://github.com/hackforla/website/issues/6670), but there are likely more.

### Issue you discovered this emergent requirement in
- NA

### Date discovered
2024-02-05

### Did you have to do something temporarily
- [ ] YES
- [x] NO

### Who was involved
@ExperimentsInHonesty @roslynwythe

### What happens if this is not addressed
slower build

### Resources

### Recommended Action Items
- [x] Make a new issue
- [ ] Discuss with team
- [ ] Let a Team Lead know

### Potential solutions [draft]
- Create or find a script to identify all files that are not part of the Jekyll build ( i.e. not being used ) so that these can be refactored out of the build
- This issue should have a dependency of
```
### Dependency
- [ ] After homepage launch
```