introduce the use of anyhow to no longer use panic

src/setup.rs

@@ -1,6 +1,7 @@
+use anyhow::{Context, Result};
 use std::os::uefi as uefi_std;
 
-pub fn init() {
+pub fn init() -> Result<()> {
     let system_table = uefi_std::env::system_table();
     let image_handle = uefi_std::env::image_handle();
 
@@ -10,9 +11,10 @@ pub fn init() {
     unsafe {
         uefi::table::set_system_table(system_table.as_ptr().cast());
         let handle = uefi::Handle::from_ptr(image_handle.as_ptr().cast())
-            .expect("unable to resolve image handle");
+            .context("unable to resolve image handle")?;
         uefi::boot::set_image_handle(handle);
     }
 
-    uefi::helpers::init().expect("failed to initialize uefi");
+    uefi::helpers::init().context("failed to initialize uefi")?;
+    Ok(())
 }