fix(herb): Use shell env from a Worktree (#270)

Be sure we use the correct shell env for starting `herb`.

Author: vitallium

src/language_servers/herb.rs

@@ -44,7 +44,7 @@ impl Herb {
                     .into_owned(),
                 "--stdio".to_string(),
             ],
-            env: Default::default(),
+            env: worktree.shell_env(),
         })
     }