Add support for projects managed with Yarn (#13644)

TODO:
- [ ] File a PR with Yarn to add Zed to the list of supported IDEs.

Fixes: https://github.com/zed-industries/zed/issues/10107
Fixes: https://github.com/zed-industries/zed/issues/13706
Release Notes:

- Improved experience in projects using Yarn. Run `yarn dlx
@yarnpkg/sdks base` in the root of your project in order to elevate your
experience.

---------

Co-authored-by: Saurabh <79586784+m4saurabh@users.noreply.github.com>

crates/fs/src/fs.rs

@@ -67,7 +67,10 @@ pub trait Fs: Send + Sync {
         self.remove_file(path, options).await
     }
     async fn open_sync(&self, path: &Path) -> Result<Box<dyn io::Read>>;
-    async fn load(&self, path: &Path) -> Result<String>;
+    async fn load(&self, path: &Path) -> Result<String> {
+        Ok(String::from_utf8(self.load_bytes(path).await?)?)
+    }
+    async fn load_bytes(&self, path: &Path) -> Result<Vec<u8>>;
     async fn atomic_write(&self, path: PathBuf, text: String) -> Result<()>;
     async fn save(&self, path: &Path, text: &Rope, line_ending: LineEnding) -> Result<()>;
     async fn canonicalize(&self, path: &Path) -> Result<PathBuf>;
@@ -318,6 +321,11 @@ impl Fs for RealFs {
         let text = smol::unblock(|| std::fs::read_to_string(path)).await?;
         Ok(text)
     }
+    async fn load_bytes(&self, path: &Path) -> Result<Vec<u8>> {
+        let path = path.to_path_buf();
+        let bytes = smol::unblock(|| std::fs::read(path)).await?;
+        Ok(bytes)
+    }
 
     async fn atomic_write(&self, path: PathBuf, data: String) -> Result<()> {
         smol::unblock(move || {
@@ -1433,6 +1441,10 @@ impl Fs for FakeFs {
         Ok(String::from_utf8(content.clone())?)
     }
 
+    async fn load_bytes(&self, path: &Path) -> Result<Vec<u8>> {
+        self.load_internal(path).await
+    }
+
     async fn atomic_write(&self, path: PathBuf, data: String) -> Result<()> {
         self.simulate_random_delay().await;
         let path = normalize_path(path.as_path());