Implement basic chat functionality

rc_core/src/persist/chat.rs

@@ -0,0 +1,15 @@
+use serde::{Serialize, Deserialize};
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct ChatConfig {
+    #[serde(default = "default_pub_channs")]
+    pub public_channels: Vec<String>,
+}
+
+fn default_pub_channs() -> Vec<String> {
+    vec![
+        "main".to_owned(),
+        "sys".to_owned(),
+        "openjam_worship".to_owned(),
+    ]
+}