Change server-side shell running implementation

server/syscalls/shell.ts

@@ -0,0 +1,16 @@
+import { shell } from "$sb/syscalls.ts";
+import { SysCallMapping } from "../../plugos/system.ts";
+import { ShellResponse } from "../../server/rpc.ts";
+import { ShellBackend } from "../shell_backend.ts";
+
+export function shellSyscalls(shellBackend: ShellBackend): SysCallMapping {
+  return {
+    "shell.run": (
+      _ctx,
+      cmd: string,
+      args: string[],
+    ): Promise<ShellResponse> => {
+      return shellBackend.handle({ cmd, args });
+    },
+  };
+}