move out vm logic out of controller

pkgs/clan-cli/clan_cli/async_cmd.py

@@ -0,0 +1,28 @@
+import asyncio
+import logging
+import shlex
+
+from .errors import ClanError
+
+log = logging.getLogger(__name__)
+
+
+async def run(cmd: list[str]) -> bytes:
+    log.debug(f"$: {shlex.join(cmd)}")
+    proc = await asyncio.create_subprocess_exec(
+        *cmd,
+        stdout=asyncio.subprocess.PIPE,
+        stderr=asyncio.subprocess.PIPE,
+    )
+    stdout, stderr = await proc.communicate()
+
+    if proc.returncode != 0:
+        raise ClanError(
+            f"""
+command: {shlex.join(cmd)}
+exit code: {proc.returncode}
+command output:
+{stderr.decode("utf-8")}
+"""
+        )
+    return stdout