custom email directory

src/main.rs

···
         AsyncSmtpTransport::<Tokio1Executor>::from_url(smtp_url.as_str())?.build();
     //Email templates setup
     let mut hbs = Handlebars::new();
-    //TODO add an override to manually load in the hbs templates
-    let _ = hbs.register_embed_templates::<EmailTemplates>();
+
+    let users_email_directory = env::var("GATEKEEPER_EMAIL_TEMPLATES_DIRECTORY");
+    if let Ok(users_email_directory) = users_email_directory {
+        hbs.register_template_file(
+            "two_factor_code.hbs",
+            format!("{users_email_directory}/two_factor_code.hbs"),
+        )?;
+    } else {
+        let _ = hbs.register_embed_templates::<EmailTemplates>();
+    }
 
     let pds_base_url =
         env::var("PDS_BASE_URL").unwrap_or_else(|_| "http://localhost:3000".to_string());

src/xrpc/com_atproto_server.rs

···
         }
     }
 
-    // Updating the acutal email address
+    // Updating the actual email address by sending it on to the PDS
     let uri = format!(
         "{}{}",
         state.pds_base_url, "/xrpc/com.atproto.server.updateEmail"