Creation of a reminder via web api

Concurrently run the reminder service as well as an web endpoint to
create a new reminder. Note that a new reminder does not notify the
reminder service yet.

Cargo update dependencies

src/config.rs

@@ -106,7 +106,9 @@ impl Config {
             xdg::BaseDirectories::with_prefix(env!("CARGO_BIN_NAME"))?.get_config_file(file);
         match Self::load_file(&user_config) {
             Ok(config) => return Ok(config),
-            Err(error) => warn!(file = ?user_config, "cannot load configuration: {:#}", Error::msg(error)),
+            Err(error) => {
+                warn!(file = ?user_config, "cannot load configuration: {:#}", Error::msg(error));
+            }
         }
 
         let global_config = format!("/etc/{}/{}", env!("CARGO_BIN_NAME"), file);