Change default extra keys style

If a user does not define a custom value in termux.properties file, then by default 2 rows will be shown with all arrow keys (up/down/left/right) for ease of terminal use.

Author: agnostic-apollo

termux-shared/src/main/java/com/termux/shared/settings/properties/TermuxPropertyConstants.java

@@ -237,7 +237,8 @@ public final class TermuxPropertyConstants {
 
     /** Defines the key for extra keys */
     public static final String KEY_EXTRA_KEYS =  "extra-keys"; // Default: "extra-keys"
-    public static final String DEFAULT_IVALUE_EXTRA_KEYS = "[[ESC, TAB, CTRL, ALT, {key: '-', popup: '|'}, DOWN, UP]]";
+    //public static final String DEFAULT_IVALUE_EXTRA_KEYS = "[[ESC, TAB, CTRL, ALT, {key: '-', popup: '|'}, DOWN, UP]]"; // Single row
+    public static final String DEFAULT_IVALUE_EXTRA_KEYS = "[['ESC','/',{key: '-', popup: '|'},'HOME','UP','END','PGUP'], ['TAB','CTRL','ALT','LEFT','DOWN','RIGHT','PGDN']]"; // Double row
 
     /** Defines the key for extra keys style */
     public static final String KEY_EXTRA_KEYS_STYLE =  "extra-keys-style"; // Default: "extra-keys-style"