Remove release channel from Zed URLs (#8863)

Also adds a new command `cli: Register Zed Scheme` that will cause URLs
to be opened in the current zed version, and we call this implicitly if
you install the CLI

Also add some status reporting to install cli

Fixes: #8857



Release Notes:

- Added success/error reporting to `cli: Install Cli`
([#8857](https://github.com/zed-industries/zed/issues/8857)).
- Removed `zed-{preview,nightly,dev}:` url schemes (used by channel
links)
- Added `cli: Register Zed Scheme` to control which zed handles the
`zed://` scheme (defaults to the most recently installed, or
the version that you last used `cli: Install Cli` with)

crates/install_cli/src/install_cli.rs

@@ -1,18 +1,18 @@
 use anyhow::{anyhow, Result};
 use gpui::{actions, AsyncAppContext};
-use std::path::Path;
+use std::path::{Path, PathBuf};
 use util::ResultExt;
 
-actions!(cli, [Install]);
+actions!(cli, [Install, RegisterZedScheme]);
 
-pub async fn install_cli(cx: &AsyncAppContext) -> Result<()> {
+pub async fn install_cli(cx: &AsyncAppContext) -> Result<PathBuf> {
     let cli_path = cx.update(|cx| cx.path_for_auxiliary_executable("cli"))??;
     let link_path = Path::new("/usr/local/bin/zed");
     let bin_dir_path = link_path.parent().unwrap();
 
     // Don't re-create symlink if it points to the same CLI binary.
     if smol::fs::read_link(link_path).await.ok().as_ref() == Some(&cli_path) {
-        return Ok(());
+        return Ok(link_path.into());
     }
 
     // If the symlink is not there or is outdated, first try replacing it
@@ -26,7 +26,7 @@ pub async fn install_cli(cx: &AsyncAppContext) -> Result<()> {
             .log_err()
             .is_some()
         {
-            return Ok(());
+            return Ok(link_path.into());
         }
     }
 
@@ -51,7 +51,7 @@ pub async fn install_cli(cx: &AsyncAppContext) -> Result<()> {
         .await?
         .status;
     if status.success() {
-        Ok(())
+        Ok(link_path.into())
     } else {
         Err(anyhow!("error running osascript"))
     }