add CLI support

extras/android/RemoteHCI/app/src/main/java/com/github/google/bumble/remotehci/CommandLineInterface.kt

@@ -0,0 +1,48 @@
+package com.github.google.bumble.remotehci
+
+import java.io.IOException
+
+class CommandLineInterface {
+    companion object {
+        @JvmStatic fun main(args: Array<String>) {
+            System.out.println("Starting proxy")
+
+            var tcpPort = DEFAULT_TCP_PORT
+            if (args.size >= 1) {
+                try {
+                    tcpPort = args[0].toInt()
+                } catch (error: NumberFormatException) {
+                    System.out.println("ERROR: invalid TCP port argument")
+                    return
+                }
+            }
+
+            try {
+                val hciProxy = HciProxy(tcpPort, object : HciProxy.Listener {
+                    override fun onHostConnectionState(connected: Boolean) {
+                    }
+
+                    override fun onHciPacketCountChange(
+                        commandPacketsReceived: Int,
+                        aclPacketsReceived: Int,
+                        scoPacketsReceived: Int,
+                        eventPacketsSent: Int,
+                        aclPacketsSent: Int,
+                        scoPacketsSent: Int
+                    ) {
+                    }
+
+                    override fun onMessage(message: String?) {
+                        System.out.println(message)
+                    }
+
+                })
+                hciProxy.run()
+            } catch (error: IOException) {
+                System.err.println("Exception while running HCI Server: $error")
+            } catch (error: HciProxy.HalException) {
+                System.err.println("HAL exception: ${error.message}")
+            }
+        }
+    }
+}

extras/android/RemoteHCI/gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-agp = "8.3.0-alpha11"
+agp = "8.3.0-alpha16"
 kotlin = "1.8.10"
 core-ktx = "1.9.0"
 junit = "4.13.2"