fix(load-cargo): load workspace from relative path

Signed-off-by: Prajwal S N <prajwalnadig21@gmail.com>

Author: snprajwal

crates/load-cargo/src/lib.rs

@@ -39,12 +39,12 @@ pub enum ProcMacroServerChoice {
 }
 
 pub fn load_workspace_at(
-    root: &Path,
+    root: impl AsRef<Path>,
     cargo_config: &CargoConfig,
     load_config: &LoadCargoConfig,
     progress: &dyn Fn(String),
 ) -> anyhow::Result<(RootDatabase, vfs::Vfs, Option<ProcMacroClient>)> {
-    let root = AbsPathBuf::assert_utf8(std::env::current_dir()?.join(root));
+    let root = AbsPathBuf::assert_utf8(root.as_ref().canonicalize()?);
     let root = ProjectManifest::discover_single(&root)?;
     let manifest_path = root.manifest_path().clone();
     let mut workspace = ProjectWorkspace::load(root, cargo_config, progress)?;