修改原本程序结构，新增命令逻辑

windows/main.py

@@ -0,0 +1,23 @@
+import sys, os, subprocess
+from pathlib import Path
+
+# 设定使用的python环境
+venv_python = Path(r"./venv/Scripts/python.exe")
+
+
+# 设定
+if len(sys.argv) == 1:
+    # 如果什么都没输入就输出
+    subprocess.run([str(venv_python),".\\command\\help.py"], check=True)
+
+if len(sys.argv) > 1:
+    command = sys.argv[1]
+
+    if command == "help":
+        subprocess.run([str(venv_python),".\\command\\help.py"], check=True)
+    elif command == "jm":
+        subprocess.run([str(venv_python),".\\command\\Download.py"], check=True)
+    elif command == "version":
+        subprocess.run([str(venv_python),".\\command\\version.py"], check=True)
+    else:
+        print(f"未知的命令: {command}")