Initial lip-sync service with command backend

scripts/test-client.ps1

@@ -0,0 +1,35 @@
+param(
+    [string]$ApiUrl = "http://127.0.0.1:7860/",
+    [Parameter(Mandatory = $true)]
+    [string]$Audio,
+    [Parameter(Mandatory = $true)]
+    [string]$Video
+)
+
+$ErrorActionPreference = "Stop"
+$Root = Resolve-Path -LiteralPath (Join-Path $PSScriptRoot "..")
+$Python = Join-Path $Root ".venv\Scripts\python.exe"
+if (!(Test-Path -LiteralPath $Python)) {
+    $Python = "py"
+}
+
+$code = @"
+import json
+import sys
+from gradio_client import Client, handle_file
+
+api_url, audio, video = sys.argv[1:4]
+client = Client(api_url)
+result = client.predict(
+    audio_file=handle_file(audio),
+    video_file={"video": handle_file(video)},
+    api_name="/process_single",
+)
+print(json.dumps(result, ensure_ascii=False, indent=2))
+"@
+
+if ($Python -eq "py") {
+    py -3 -c $code $ApiUrl $Audio $Video
+} else {
+    & $Python -c $code $ApiUrl $Audio $Video
+}