refacto: Displaying number of players for each team + adding logo at registration

public/src/api.js

@@ -99,3 +99,15 @@ export async function apiFetchVictoryPoints() {
   if (!res.ok) throw new Error("vp_fetch_failed");
   return res.json();
 }
+
+export async function apiFetchPlayerCounts() {
+  const res = await fetch("/api/auth/player-counts");
+  if (!res.ok) throw new Error("player_counts_fetch_failed");
+  return res.json();
+}
+
+export async function apiFetchActivePlayers() {
+  const res = await fetch("/api/active-players");
+  if (!res.ok) throw new Error("active_players_fetch_failed");
+  return res.json();
+}