Add initial CI job for Windows target (#8088)

Clippy is disabled for now, due to many warnings in both `gpui` and
other code, see
https://github.com/zed-industries/zed/actions/runs/7980269779/job/21789529800
for more details.

Also, due to `#!/usr/bin/env bash` shebang in the `script/clippy`, it
starts in Windows CI with `shell: C:\Program Files\Git\bin\bash.EXE
-euxo pipefail {0}`

https://github.com/zed-industries/zed/actions/runs/7980269779/job/21789529800#step:4:3
It seems more appropriate to use PowerShell instead.

See `todo!("windows")` for all stubbed places currently.

Release Notes:

- N/A

crates/install_cli/src/install_cli.rs

@@ -18,12 +18,16 @@ pub async fn install_cli(cx: &AsyncAppContext) -> Result<()> {
     // If the symlink is not there or is outdated, first try replacing it
     // without escalating.
     smol::fs::remove_file(link_path).await.log_err();
-    if smol::fs::unix::symlink(&cli_path, link_path)
-        .await
-        .log_err()
-        .is_some()
+    // todo!("windows")
+    #[cfg(not(windows))]
     {
-        return Ok(());
+        if smol::fs::unix::symlink(&cli_path, link_path)
+            .await
+            .log_err()
+            .is_some()
+        {
+            return Ok(());
+        }
     }
 
     // The symlink could not be created, so use osascript with admin privileges