Add show-config admin room command

src/database/globals.rs

@@ -35,7 +35,7 @@ pub struct Globals {
     pub actual_destination_cache: Arc<RwLock<WellKnownMap>>, // actual_destination, host
     pub tls_name_override: Arc<RwLock<TlsNameMap>>,
     pub(super) globals: Arc<dyn Tree>,
-    config: Config,
+    pub config: Config,
     keypair: Arc<ruma::signatures::Ed25519KeyPair>,
     dns_resolver: TokioAsyncResolver,
     jwt_decoding_key: Option<jsonwebtoken::DecodingKey<'static>>,