implement the ProxyManager

untested

core/build.gradle.kts

@@ -1,6 +1,7 @@
 plugins {
     alias(libs.plugins.blossom)
     alias(libs.plugins.indragit)
+    alias(libs.plugins.protobuf)
 }
 
 description = "Core functions for valiobungee"
@@ -20,3 +21,24 @@ java {
     withJavadocJar()
     withSourcesJar()
 }
+
+dependencies {
+    api(project(":valiobungee-api"))
+    api(libs.protobuf)
+    api(libs.caffeine)
+    api(libs.slf4j)
+
+    testImplementation(libs.testing.juipter)
+    testImplementation(libs.testing.slf4j.simple)
+}
+
+tasks.test {
+    useJUnitPlatform()
+}
+
+protobuf {
+    protoc {
+        artifact = libs.protoc.get().toString()
+    }
+}
+