feat: marker for edited notes

[mateo-ivc]

Description

Adding a marker that indicates if a note has been edited or not

Changelog

dto/notes.go

• added field if a note has been edited

database/migrations

• added field to notes table, that stores if a note has been edited

database/notes.go

• updates the edited field in the database to true, since text has been changed

components/Note

• added marker beneath text
• added css where needed

Checklist

• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [x] The light- and dark-theme are both supported and tested
• [x] The design was implemented and is responsive for all devices and screen sizes
• [x] The application was tested in the most commonly used browsers (e.g. Chrome, Firefox, Safari)

(Optional) Visual Changes