UI/UX: Add server os comboBox in setting menu

Author: Dokyeongyun

src/main/resources/fxml/ServerConnectionInfoAnchorPane.fxml

@@ -10,7 +10,6 @@
 <?import javafx.scene.layout.GridPane?>
 <?import javafx.scene.layout.RowConstraints?>
 
-
 <fx:root style="-fx-background-color: white;" stylesheets="@../css/javaFx.css" type="AnchorPane" xmlns="http://javafx.com/javafx/17" xmlns:fx="http://javafx.com/fxml/1">
    <children>
       <GridPane AnchorPane.bottomAnchor="5.0" AnchorPane.leftAnchor="5.0" AnchorPane.rightAnchor="5.0" AnchorPane.topAnchor="5.0">
@@ -50,6 +49,12 @@
             <PasswordField fx:id="passwordPF" prefWidth="200.0" promptText="hidden" GridPane.columnIndex="1" GridPane.columnSpan="2" GridPane.rowIndex="2" />
             <Label style="-fx-font-size: 11px;" styleClass="basic-font" stylesheets="@../css/javaFx.css" text="AlertLog DateFormat :" GridPane.rowIndex="4" />
             <JFXComboBox fx:id="alertLogDateFormatCB" prefWidth="424.0" GridPane.columnIndex="1" GridPane.rowIndex="4" />
+            <Label style="-fx-font-size: 11px;" styleClass="basic-font" stylesheets="@../css/javaFx.css" text="Server OS" GridPane.columnIndex="2" GridPane.rowIndex="2">
+               <padding>
+                  <Insets left="10.0" />
+               </padding>
+            </Label>
+            <JFXComboBox fx:id="serverOSCB" prefWidth="100.0" GridPane.columnIndex="3" GridPane.rowIndex="2" />
          </children>
          <padding>
             <Insets bottom="5.0" left="10.0" right="10.0" top="5.0" />