Feature/profile image uploads (#687)

* Introduce ActiveStorage

* Add active storage related service gems

* Update storage.yml

* Install image processing gem
- sudo apt-get install libvips (required dependency)

* Set default active storage service

* Add profile image to user model

* Amend form to allow profile images to be saved, introduce stimulus controller.

* Purge image when form is blank

* Update markup/stimulus controller

* Add test for profile image uplaods

* Add profile image validation

* Use rails guide gem versions

* Use correct ERB syntax and make all storage options configurable

* Ensure form submits when user clears profile image

* Add profile image thumbnail method

* Extract profile image to a partial

* Updates env.example and storage.yml

* Fix bug with double form save

* Add profile image to the sidenav

* Update production config

* Fix ERB formatting

* normalize en.yml

* Handle non-square images

* Use pre-processing on thumbnail variant

* Resovle gemfile.lock issues

* Rubocop style changes

---------

Signed-off-by: Christian <47796704+crobbo@users.noreply.github.com>
Co-authored-by: Christian Robinson <christian@robbo.dev>

config/locales/views/settings/en.yml

@@ -106,4 +106,5 @@ en:
         profile_title: Profile
         save: Save
       update:
+        file_size_error: File size must be less than 5MB
         success: Profile updated successfully.