docs: update feature screenshots (#361)

github-actions[bot] and andrinoff created 

Co-authored-by: andrinoff <175145001+andrinoff@users.noreply.github.com>

Change summary

docs/docs/assets/features/compose_email.png  | 0 
docs/docs/assets/features/compose_empty.png  | 0 
docs/docs/assets/features/main_menu.png      | 0 
docs/docs/assets/features/theme_settings.png | 0 
4 files changed

Detailed changes