feat: add use_starttls config option for SMTP

Revolt.toml

@@ -38,6 +38,7 @@ from_address = "development@revolt.chat"
 reply_to = "support@revolt.chat"
 port = 14025
 use_tls = false
+use_starttls = false
 
 [files.s3]
 # S3 protocol endpoint

crates/core/config/src/lib.rs

@@ -123,6 +123,7 @@ pub struct ApiSmtp {
     pub reply_to: Option<String>,
     pub port: Option<i32>,
     pub use_tls: Option<bool>,
+    pub use_starttls: Option<bool>,
 }
 
 #[derive(Deserialize, Debug, Clone)]
@@ -178,7 +179,7 @@ pub struct ApiWorkers {
 
 #[derive(Deserialize, Debug, Clone)]
 pub struct ApiUsers {
-    pub early_adopter_cutoff: Option<u64>
+    pub early_adopter_cutoff: Option<u64>,
 }
 
 #[derive(Deserialize, Debug, Clone)]

crates/core/database/src/drivers/mod.rs

@@ -121,7 +121,7 @@ impl Database {
                         ),
                         port: config.api.smtp.port,
                         use_tls: config.api.smtp.use_tls,
-                        use_starttls: None,
+                        use_starttls: config.api.smtp.use_starttls,
                     },
                     expiry: Default::default(),
                     templates: if config.production {