Add optional MySQL support for statistics storage

build.gradle

@@ -22,6 +22,7 @@ dependencies {
     compileOnly 'io.papermc.paper:paper-api:1.21.4-R0.1-SNAPSHOT'
     compileOnly 'me.clip:placeholderapi:2.11.6'
     implementation 'org.xerial:sqlite-jdbc:3.47.1.0'
+    implementation 'com.mysql:mysql-connector-j:9.1.0'
 
     testImplementation platform('org.junit:junit-bom:5.11.3')
     testImplementation 'org.junit.jupiter:junit-jupiter'
@@ -46,6 +47,9 @@ shadowJar {
     archiveClassifier.set('')
     archiveBaseName.set('BlockParty')
     relocate 'org.sqlite', 'us.tss3.blockparty.libs.sqlite'
+    // com.mysql is intentionally left unrelocated: mysql-connector-j is loaded by fully
+    // qualified class name (com.mysql.cj.jdbc.Driver) at runtime via Class.forName.
+    mergeServiceFiles()
 }
 
 test {