Modals without turbo

[DanielJackson-Oslo]

• [x] Creates modal helpers that do not use turbo, and are responsive and hopefully accessible.
• [x] Removes the Hidden Stimulus controller as it was only used for one modal, and puts the functionality into the modal helper
• [x] Uses turbo frames with lazy loading for heavy modals
• [x] Adds loading icon for lazy loading turbo
• [x] Fixes and standardizes the modal styling

Does not handle the modal footer styling of Review#new or the modal footer of SpaceFacility#new