Add deprecations to SignSide string methods (#9467)

patches/api/0005-Adventure.patch

@@ -1644,10 +1644,10 @@ index 5fc1c759e6e8f3fd43a5fa5c6e3f777efa16b1ec..e6b87ad5b2099800a61e7f585a5404e9
      @Deprecated
      public void setLine(int index, @NotNull String line) throws IndexOutOfBoundsException;
 diff --git a/src/main/java/org/bukkit/block/sign/SignSide.java b/src/main/java/org/bukkit/block/sign/SignSide.java
-index 0f4ae7bd2ad379b5edb40f49f93de9e18c38f415..22bfe971920b526bd1bd52cb58d6acbf0a7ef5be 100644
+index 0f4ae7bd2ad379b5edb40f49f93de9e18c38f415..575e545a69b5279b90067d7ebee08b7b59288496 100644
 --- a/src/main/java/org/bukkit/block/sign/SignSide.java
 +++ b/src/main/java/org/bukkit/block/sign/SignSide.java
-@@ -7,6 +7,39 @@ import org.jetbrains.annotations.NotNull;
+@@ -7,13 +7,48 @@ import org.jetbrains.annotations.NotNull;
   * Represents a side of a sign.
   */
  public interface SignSide extends Colorable {
@@ -1687,6 +1687,36 @@ index 0f4ae7bd2ad379b5edb40f49f93de9e18c38f415..22bfe971920b526bd1bd52cb58d6acbf
  
      /**
       * Gets all the lines of text currently on this side of the sign.
+      *
+      * @return Array of Strings containing each line of text
++     * @deprecated in favour of {@link #lines()}
+      */
+     @NotNull
++    @Deprecated // Paper
+     public String[] getLines();
+ 
+     /**
+@@ -24,8 +59,10 @@ public interface SignSide extends Colorable {
+      * @param index Line number to get the text from, starting at 0
+      * @return Text on the given line
+      * @throws IndexOutOfBoundsException Thrown when the line does not exist
++     * @deprecated in favour of {@link #line(int)}
+      */
+     @NotNull
++    @Deprecated // Paper
+     public String getLine(int index) throws IndexOutOfBoundsException;
+ 
+     /**
+@@ -37,7 +74,9 @@ public interface SignSide extends Colorable {
+      * @param index Line number to set the text at, starting from 0
+      * @param line New text to set at the specified index
+      * @throws IndexOutOfBoundsException If the index is out of the range 0..3
++     * @deprecated in favour of {@link #line(int, net.kyori.adventure.text.Component)}
+      */
++    @Deprecated // Paper
+     public void setLine(int index, @NotNull String line) throws IndexOutOfBoundsException;
+ 
+     /**
 diff --git a/src/main/java/org/bukkit/command/Command.java b/src/main/java/org/bukkit/command/Command.java
 index 80209bb88a0294d4eedc78509533a6257315d856..75759131bd94b672bec4cd8e271ebff1ad391cba 100644
 --- a/src/main/java/org/bukkit/command/Command.java