Added option to have an imprint

The environment Variable IMPRINT_URL simply adds a /imprint button in footer to the url

packages/backend/src/status/mod.rs

@@ -12,6 +12,7 @@ pub struct Status {
     pub max_expiration: u32,
     pub allow_advanced: bool,
     pub allow_files: bool,
+    pub imprint_url: String,
     // Theme
     pub theme_image: String,
     pub theme_text: String,
@@ -28,6 +29,7 @@ pub async fn get_status() -> (StatusCode, Json<Status>) {
         max_expiration: *config::MAX_EXPIRATION,
         allow_advanced: *config::ALLOW_ADVANCED,
         allow_files: *config::ALLOW_FILES,
+        imprint_url: config::IMPRINT_URL.to_string(),
         theme_new_note_notice: *config::THEME_NEW_NOTE_NOTICE,
         theme_image: config::THEME_IMAGE.to_string(),
         theme_text: config::THEME_TEXT.to_string(),