add rekeys, refounding and dissolution

crates/concord/src/store.rs

@@ -120,6 +120,8 @@ pub struct CommunityState {
     pub heads: Vec<EntityHead>,
     #[serde(default, skip_serializing_if = "BTreeSet::is_empty")]
     pub banned: BTreeSet<PublicKey>,
+    #[serde(default)]
+    pub dissolved: bool,
     pub added_at_ms: u64,
 }
 
@@ -186,6 +188,7 @@ impl CommunityState {
             relays,
             heads,
             banned: BTreeSet::new(),
+            dissolved: false,
             added_at_ms,
         })
     }