feat: add mcping and help command

gradle/libs.versions.toml

@@ -1,10 +1,11 @@
 [versions]
 kotlinVersion = "2.0.10"
-ronebotVersion = "1.5.7"
+ronebotVersion = "1.5.8"
 shadowVersion = "8.3.0"
 okhttpVersion = "5.0.0-alpha.14"
 exposedVersion = "0.53.0"
 sqliteJDBCVersion = "3.46.1.0"
+motdPingerVersion = "1.0.1"
 
 [libraries]
 rOneBot = { group = "cn.rtast", name = "ROneBot", version.ref = "ronebotVersion" }
@@ -12,6 +13,7 @@ okhttp = { group = "com.squareup.okhttp3", name = "okhttp", version.ref = "okhtt
 exposedCore = { group = "org.jetbrains.exposed", name = "exposed-core", version.ref = "exposedVersion" }
 exposedJDBC = { group = "org.jetbrains.exposed", name = "exposed-jdbc", version.ref = "exposedVersion" }
 sqliteJDBC = { group = "org.xerial", name = "sqlite-jdbc", version.ref = "sqliteJDBCVersion" }
+motdPinger = { group = "cn.rtast", name = "MotdPinger", version.ref = "motdPingerVersion" }
 
 [bundles]