fix(minestom): configure shadowJar so the loader gets a real JarInJar

The :minestom module declared the shadow plugin but had no shadowJar
configuration, so its output was a plain <name>-all.jar with no
relocations. :minestom/loader/build.gradle then embeds that file via
`from { project(':minestom').tasks.shadowJar.archiveFile }`, which the
Shadow plugin unzips because the file has a .jar extension. Result: the
published net.luckperms:minestom-loader jar carries un-relocated
net/kyori/adventure/** and net/bytebuddy/** at the top level, defeating
the JarInJar isolation and pinning every consumer (Titan, etc.) to
LuckPerms' bundled Adventure version. Visible in the published artifact.

Mirror the :velocity shadowJar config (closest adventure-native analogue):
- archiveFileName = 'luckperms-minestom.jarinjar' so the loader's `from`
  copies it verbatim (Shadow does not unzip non-.jar inputs) and so the
  JarInJarClassLoader resource lookup matches MinestomLoader's JAR_NAME
- the same relocate set as :velocity (adventure, event, caffeine, okio,
  okhttp3, bytebuddy, commodore, mariadb, mysql, postgresql, hikari,
  mongodb, bson, jedis, nats, rabbitmq, commonspool2, configurate, yaml)
- artifacts { archives shadowJar } so the loader picks up the new file

After this, minestom-loader-5.6-SNAPSHOT.jar contains
luckperms-minestom.jarinjar as a single resource (no top-level
net/kyori/adventure/**) and the embedded LuckPerms platform runs in its
JarInJar-isolated classloader as designed.

https://claude.ai/code/session_01S76fk9ma5Szkf9r1W44RVP

Author: claude

minestom/build.gradle

@@ -15,6 +15,34 @@ dependencies {
     compileOnly 'org.slf4j:slf4j-api:2.0.17'
 }
 
+shadowJar {
+    archiveFileName = 'luckperms-minestom.jarinjar'
+
+    relocate 'net.kyori.adventure', 'me.lucko.luckperms.lib.adventure'
+    relocate 'net.kyori.event', 'me.lucko.luckperms.lib.eventbus'
+    relocate 'com.github.benmanes.caffeine', 'me.lucko.luckperms.lib.caffeine'
+    relocate 'okio', 'me.lucko.luckperms.lib.okio'
+    relocate 'okhttp3', 'me.lucko.luckperms.lib.okhttp3'
+    relocate 'net.bytebuddy', 'me.lucko.luckperms.lib.bytebuddy'
+    relocate 'me.lucko.commodore', 'me.lucko.luckperms.lib.commodore'
+    relocate 'org.mariadb.jdbc', 'me.lucko.luckperms.lib.mariadb'
+    relocate 'com.mysql', 'me.lucko.luckperms.lib.mysql'
+    relocate 'org.postgresql', 'me.lucko.luckperms.lib.postgresql'
+    relocate 'com.zaxxer.hikari', 'me.lucko.luckperms.lib.hikari'
+    relocate 'com.mongodb', 'me.lucko.luckperms.lib.mongodb'
+    relocate 'org.bson', 'me.lucko.luckperms.lib.bson'
+    relocate 'redis.clients.jedis', 'me.lucko.luckperms.lib.jedis'
+    relocate 'io.nats.client', 'me.lucko.luckperms.lib.nats'
+    relocate 'com.rabbitmq', 'me.lucko.luckperms.lib.rabbitmq'
+    relocate 'org.apache.commons.pool2', 'me.lucko.luckperms.lib.commonspool2'
+    relocate 'ninja.leaping.configurate', 'me.lucko.luckperms.lib.configurate'
+    relocate 'org.yaml.snakeyaml', 'me.lucko.luckperms.lib.yaml'
+}
+
+artifacts {
+    archives shadowJar
+}
+
 java {
     toolchain {
         languageVersion = JavaLanguageVersion.of(25)