Implement basic chat functionality

rc_chat_room/src/operations/public_channels.rs

@@ -0,0 +1,20 @@
+use polariton_server::operations::Immediate;
+//use polariton::operation::{ParameterTable, Typed};
+use rc_core::ConfigProvider;
+
+const PARAM_KEY: u8 = 20;
+
+pub(super) fn public_channels_provider(conf: &rc_core::persist::config::ConfigImpl) -> Immediate<13, crate::UserTy> {
+    let pub_channs = conf.public_channels();
+    Immediate::new(move || {
+        let mut params = std::collections::HashMap::with_capacity(1);
+        params.insert(PARAM_KEY, pub_channs.to_owned());
+        /*params.insert(PARAM_KEY, Typed::Arr(Arr {
+            ty: polariton::serdes::TypePrefix::Str,
+            items: vec![
+                Typed::Str("Pluto".into()),
+            ],
+        }));*/
+        params.into()
+    })
+}