Add more API to topics

Author: yim-lee

Package.swift

@@ -4,7 +4,7 @@
 //
 // This source file is part of the SwiftStatsdClient open source project
 //
-// Copyright (c) 2022 the SwiftStatsdClient project authors
+// Copyright (c) 2019-2022 the SwiftStatsdClient project authors
 // Licensed under Apache License v2.0
 //
 // See LICENSE.txt for license information

Sources/StatsdClient/Docs.docc/index.md

@@ -41,6 +41,11 @@ Metrics types are mapped as following:
 * Timer -> Timer
 
 ## Topics
+
+### Client API
+
+- ``StatsdClient/init(eventLoopGroupProvider:host:port:metricNameSanitizer:)``
+- ``StatsdClient/shutdown(_:)``
 
 ### Metrics API