fix(pwsp-lib): fixed unhandled panic on missing config directory (#157)

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

pwsp-lib/src/utils/config.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
+use anyhow::{Context, Result};
 use std::path::PathBuf;
 
 pub fn get_config_path() -> Result<PathBuf> {
-    let config_path = dirs::config_dir().expect("Failed to obtain config dir");
+    let config_path = dirs::config_dir().context("Failed to obtain config dir")?;
     Ok(config_path.join("pwsp"))
 }