Feat/test smtp (#2806)

* add test-smtp server subcommand

* return error is password is None

* fix return type

* borrow variables

* convert args to &str

* Tuple needs to have the same types apparently

* Clone instead

* fix formatting

* improve test email body

* Update core/startos/src/system.rs

Co-authored-by: kn0wmad <39687477+kn0wmad@users.noreply.github.com>

* add tls connection

* remove commented code

* use aidens mail-send fork

---------

Co-authored-by: kn0wmad <39687477+kn0wmad@users.noreply.github.com>

core/startos/src/lib.rs

@@ -295,6 +295,13 @@ pub fn server<C: Context>() -> ParentHandler<C> {
                 .with_about("Set system smtp server and credentials")
                 .with_call_remote::<CliContext>()
         )
+        .subcommand(
+            "test-smtp", 
+            from_fn_async(system::test_system_smtp)
+                .no_display()
+                .with_about("Send test email using system smtp server and credentials")
+                .with_call_remote::<CliContext>()
+        )
         .subcommand(
             "clear-smtp",
             from_fn_async(system::clear_system_smtp)