feat: add optimization script for web

---

# Reference these scripts as follows to integrate them into your jobs:

# before_script:

#   - !reference [".web:optimize", images]

#   - !reference [".web:optimize", other]

#   - echo "something else"

# Place these where they are best suited. For example, optimize images _before_

# building your site, so these may be for example gzipped with an efficient size.

.web:optimize:

  images:

    - find . -type f -name "*.jpg" -o -name "*.jpeg" -exec magick mogrify

      -verbose -strip -interlace Plane -quality 75 -resize 2560x\> {} \;