Rename address field to street and change to text input

Changes the user settings address field to street with the following updates:
- Renames database field from 'address' to 'street' in UserSettings type
- Changes form input from textarea to single-line text input
- Updates validation logic and error messages
- Updates translations in both Croatian and English
- Removes deprecated AppSettingsForm component

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/lib/db-types.ts

@@ -22,8 +22,8 @@ export interface UserSettings {
     firstName?: string | null;
     /** last name */
     lastName?: string | null;
-    /** address */
-    address?: string | null;
+    /** street */
+    street?: string | null;
     /** IBAN */
     iban?: string | null;
     /** whether to show 2D code in monthly statement */