added the scoreboard system

src/main/aether/scoreboard/BoardEntry.java

@@ -0,0 +1,90 @@
+package aether.scoreboard;
+
+import lombok.Getter;
+import lombok.Setter;
+import lombok.experimental.Accessors;
+import org.bukkit.ChatColor;
+import org.bukkit.scoreboard.Objective;
+import org.bukkit.scoreboard.Score;
+import org.bukkit.scoreboard.Scoreboard;
+import org.bukkit.scoreboard.Team;
+
+@Accessors(chain = true)
+public class BoardEntry {
+
+    @Getter private Board board;
+    @Getter @Setter private String text;
+    @Getter private String originalText;
+    @Getter private String key;
+    @Getter private Team team;
+
+    public BoardEntry(Board board, String text) {
+        this.board = board;
+        this.text = text;
+        this.originalText = text;
+        this.key = board.getNewKey(this);
+
+        setup();
+    }
+
+    public BoardEntry setup() {
+        Scoreboard scoreboard = board.getScoreboard();
+
+        text = ChatColor.translateAlternateColorCodes('&', text);
+
+        String teamName = key;
+
+        if (teamName.length() > 16) {
+            teamName = teamName.substring(0, 16);
+        }
+
+        if (scoreboard.getTeam(teamName) != null) {
+            team = scoreboard.getTeam(teamName);
+        } else {
+            team = scoreboard.registerNewTeam(teamName);
+        }
+
+        if (!(team.getEntries().contains(key))) {
+            team.addEntry(key);
+        }
+
+        if (!(board.getEntries().contains(this))) {
+            board.getEntries().add(this);
+        }
+
+        return this;
+    }
+
+    public BoardEntry send(int position) {
+        Objective objective = board.getObjective();
+
+        if (text.length() > 16) {
+            boolean fix = text.toCharArray()[15] == ChatColor.COLOR_CHAR;
+
+            String prefix = fix ? text.substring(0, 15) : text.substring(0, 16);
+            String suffix = fix ? text.substring(15) : ChatColor.getLastColors(prefix) + text.substring(16);
+
+            team.setPrefix(prefix);
+
+            if (suffix.length() > 16) {
+                team.setSuffix(suffix.substring(0, 16));
+            } else {
+                team.setSuffix(suffix);
+            }
+        } else {
+            team.setPrefix(text);
+            team.setSuffix("");
+        }
+
+        Score score = objective.getScore(key);
+        score.setScore(position);
+
+        return this;
+    }
+
+    public void remove() {
+        board.getKeys().remove(key);
+        board.getScoreboard().resetScores(key);
+    }
+
+}