Update linux binary expectations (#12622)

Fixes #12585

This changes the expectations for installed binaries on linux based on
work
that @jirutka has done for Alpine.

In particular, we now put the cli in place as `bin/zed` and the zed
binary as
`libexec/zed-editor`, and assume that packagers do the same.

cc @someone13574

Release notes:

- N/A

---------

Co-authored-by: Mikayla <mikayla@zed.dev>

script/install.sh

@@ -80,7 +80,12 @@ linux() {
     mkdir -p "$HOME/.local/bin" "$HOME/.local/share/applications"
 
     # Link the binary
-    ln -sf ~/.local/zed$suffix.app/bin/cli "$HOME/.local/bin/zed"
+    if [ -f ~/.local/zed$suffix.app/bin/zed ]; then
+        ln -sf ~/.local/zed$suffix.app/bin/zed "$HOME/.local/bin/zed"
+    else
+        # support for versions before 0.139.x.
+        ln -sf ~/.local/zed$suffix.app/bin/cli "$HOME/.local/bin/zed"
+    fi
 
     # Copy .desktop file
     desktop_file_path="$HOME/.local/share/applications/${appid}.desktop"