[U] Use kotlin entrypoint

src/main/java/icu/samnyan/aqua/AquaServerApplication.kt

@@ -0,0 +1,22 @@
+package icu.samnyan.aqua
+
+import icu.samnyan.aqua.sega.aimedb.AimeDbServer
+import icu.samnyan.aqua.spring.util.AutoChecker
+import org.springframework.boot.SpringApplication
+import org.springframework.boot.autoconfigure.SpringBootApplication
+
+@SpringBootApplication
+class AquaServerApplication
+
+/**
+ * Main method, entry point of the application
+ */
+fun main(args: Array<String>) {
+    val ctx = SpringApplication.run(AquaServerApplication::class.java, *args)
+
+    val aimeDbServer = ctx.getBean(AimeDbServer::class.java)
+    aimeDbServer.start()
+
+    val checker = ctx.getBean(AutoChecker::class.java)
+    checker.check()
+}