Added translation using Weblate (Croatian)

Author: milotype

docs/hr/setup.md

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+# Setup
+<div align="center">
+    <img src="/images/usage/setup_01.jpg" alt="setup_01" width="50%">
+</div>
+
+## Root permission
+You need to grant root first.
+
+### * Magisk
+You can grant root access directly in the popup window when clicking the
+permission card.
+
+### * KernelSU/APatch
+You need to grant root access manually in their manager first, then restart
+**DataBackup**.
+
+### Custom su file
+For some devices, `su` file may not be named `su`, so you can edit it manually.
+Just remember to restart **DataBackup** to make it work.
+
+<div align="center">
+    <img src="/images/usage/setup_02.jpg" alt="setup_02" width="50%">
+</div>