cli: add acquire_cli (#179837)

* cli: add acquire_cli

As given in my draft document, pipes a CLI of the given platform to the
specified process, for example:

```js
const cmd = await rpc.call('acquire_cli', {
	command: 'node',
	args: [
		'-e',
		'process.stdin.pipe(fs.createWriteStream("c:/users/conno/downloads/hello-cli"))',
	],
	platform: Platform.LinuxX64,
	quality: 'insider',
});
```

It genericizes caching so that the CLI is also cached on the host, just
like servers.

* fix bug

cli/src/util.rs

@@ -17,9 +17,5 @@ pub mod sync;
 pub use is_integrated::*;
 pub mod app_lock;
 pub mod file_lock;
-
-#[cfg(target_os = "linux")]
 pub mod tar;
-
-#[cfg(any(target_os = "windows", target_os = "macos"))]
 pub mod zipper;