adds round telemetry support

src/lib/server/db/schema.sql

@@ -242,3 +242,9 @@ CREATE TABLE IF NOT EXISTS settings (
     key   TEXT PRIMARY KEY,
     value TEXT NOT NULL
 );
+CREATE TABLE IF NOT EXISTS server_telemetry (
+    server TEXT PRIMARY KEY REFERENCES servers(name) ON DELETE CASCADE,
+    round INTEGER NOT NULL,
+    players INTEGER NOT NULL,
+    received_at TEXT NOT NULL
+);