Add player stat collection with pluggable YAML/MySQL storage

Tracks races played, wins, total laps, and best times per player and
per race, recorded off the main thread after each finish. Backed by
a StatsStorage interface with two implementations: the default
YamlStatsStorage (stats.yml, zero setup) and MySqlStatsStorage
(HikariCP-pooled, auto-creates its tables, configured via
config.yml). MySQL init failures fall back to YAML rather than
blocking plugin startup. Adds /boatparty stats and /boatparty top
commands. Bundles and relocates HikariCP + MySQL Connector/J via
shadow (bumped to 9.0.2, the prior 8.3.5 couldn't shade Java 25
class files).

Co-Authored-By: Claude Sonnet 5 <[email protected]>

build.gradle.kts

@@ -1,6 +1,6 @@
 plugins {
     java
-    id("com.gradleup.shadow") version "8.3.5"
+    id("com.gradleup.shadow") version "9.0.2"
 }
 
 group = "us.tss3.boatparty"
@@ -19,6 +19,9 @@ repositories {
 
 dependencies {
     compileOnly("io.papermc.paper:paper-api:26.2.build.111-stable")
+
+    implementation("com.zaxxer:HikariCP:7.1.0")
+    implementation("com.mysql:mysql-connector-j:26.7.0")
 }
 
 tasks {
@@ -36,6 +39,13 @@ tasks {
     shadowJar {
         archiveClassifier.set("")
         archiveBaseName.set("BoatParty")
+
+        relocate("com.zaxxer.hikari", "us.tss3.boatparty.libs.hikari")
+        relocate("com.mysql", "us.tss3.boatparty.libs.mysql")
+
+        minimize {
+            exclude(dependency("com.mysql:mysql-connector-j:.*"))
+        }
     }
 
     build {