feat: add success or failure messages for `certify` and `adhere` commands

src/cli/adhere.rs

@@ -44,5 +44,11 @@ pub fn adhere(keyring: &Box<dyn ToDuniterKey>, node: &BmaNode) -> Result<(), Str
         adhere_blockstamp: current_blockstamp.clone(),
     };
     let signature = keyring.sign(&membership);
-    crate::bma::wot::membership(&node, &membership.to_signable(), &signature.to_string())
+    let result = crate::bma::wot::membership(&node, &membership.to_signable(), &signature.to_string());
+    if let Ok(_) = result {
+        println!("Membership sent successfully.");
+    } else {
+        eprintln!("An error occured during adhesion.");
+    }
+    result
 }
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src/cli/certify.rs

@@ -43,5 +43,11 @@ pub fn certify(keyring: &Box<dyn ToDuniterKey>, node: &BmaNode, uid_or_pub: &Str
         cert_blockstamp: current_blockstamp.clone(),
     };
     let signature = keyring.sign(&certification);
-    crate::bma::wot::certify(&node, &certification.to_signable(), &signature.to_string())
+    let result = crate::bma::wot::certify(&node, &certification.to_signable(), &signature.to_string());
+    if let Ok(_) = result {
+        println!("Certification sent successfully.");
+    } else {
+        eprintln!("An error occured during certification.");
+    }
+    result
 }
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