feat: initial work on elasticsearch integration

Signed-off-by: Zomatree <me@zomatree.live>

crates/core/config/src/lib.rs

@@ -408,6 +408,19 @@ pub struct Sentry {
     pub gifbox: String,
 }
 
+#[derive(Deserialize, Debug, Clone)]
+pub struct Elasticsearch {
+    pub host: String,
+    pub port: u16,
+    pub api_key: String,
+
+    pub exchange: String,
+    pub message_queue: String,
+    pub message_edit_queue: String,
+    pub message_delete_queue: String,
+    pub channel_delete_queue: String,
+}
+
 #[derive(Deserialize, Debug, Clone)]
 pub struct Settings {
     pub database: Database,
@@ -419,6 +432,7 @@ pub struct Settings {
     pub features: Features,
     pub sentry: Sentry,
     pub production: bool,
+    pub elasticsearch: Elasticsearch,
 }
 
 impl Settings {