Support Component placeholders in language API

Add support for passing Components as placeholders in LanguageManager (getComponent, getMessageList) and add Player extension overloads (sendMsg, trans) that accept component pairs. Replace usages of legacy serialized strings with direct Component placeholders across kits, scoreboard, and listeners (remove legacySerializer imports/usages). Also normalize placeholder keys (remove angle brackets in ConnectListener) and scope legacySerializer as private in Extensions.

src/main/kotlin/club/mcscrims/speedhg/util/Extensions.kt

@@ -8,7 +8,7 @@ import org.bukkit.entity.Player
 
 private val langManager get() = SpeedHG.instance.languageManager
 
-internal val legacySerializer = LegacyComponentSerializer.builder()
+private val legacySerializer = LegacyComponentSerializer.builder()
 	.character('§')
 	.hexColors()
 	.useUnusualXRepeatedCharacterHexFormat()
@@ -22,6 +22,15 @@ fun Player.sendMsg(
 	this.sendMessage( component )
 }
 
+fun Player.sendMsg(
+	key: String,
+	placeholders: Map<String, String>,
+	vararg components: Pair<String, Component>
+) {
+	val component = langManager.getComponent( this, key, placeholders, components.toMap() )
+	this.sendMessage( component )
+}
+
 fun Player.trans(
 	key: String,
 	vararg placeholders: Pair<String, String>
@@ -30,6 +39,15 @@ fun Player.trans(
 	return langManager.getComponent( this, key, placeholders.toMap() )
 }
 
+fun Player.trans(
+	key: String,
+	placeholders: Map<String, String>,
+	vararg components: Pair<String, Component>
+): Component
+{
+	return langManager.getComponent( this, key, placeholders, components.toMap() )
+}
+
 fun Player.transList(
 	key: String,
 	placeholders: Map<String, String>