refs #8576
- adds new API endpoint `/uploads/profile-image` for uploading profile images
- new validation which fails with error message if uploaded image is not square
- Renamed getImageSizeFromFilePath to getImageSizeFromStoragePath, because it's more explicit
- Add new getImageSizeFromPath method, which is used in the new dimensions middleware
- Ensure we use the sharp middleware to auto-resize the uploaded profile pictures
- Ensure the new route get's added to v2
While this makes sure all future profile images uploaded are square, this doesn’t affect any existing non-square profile image. Needs more thought on how to handle existing non-square profile images for the purpose of making theming easier in future.
