feat: add BELO peak hour analysis chart

- New backend endpoint GET /quotes/:type/peak-hours
- Groups daily price data by hour to find peak frequency
- Bar chart showing how often each hour is the daily peak
- Only displayed for BELO currency in analysis page

apps/backend/src/modules/quotes/quotes.routes.ts

@@ -5,6 +5,7 @@ import { getDailyMinMax } from "./handlers/getDailyMinMax";
 import { getDailyQuotes } from "./handlers/getDailyQuotes";
 import { getHistoricalMinMax } from "./handlers/getHistoricalMinMax";
 import { getMonthlyLast } from "./handlers/getMonthlyLast";
+import { getPeakHours } from "./handlers/getPeakHours";
 import { getQuoteHistory } from "./handlers/getQuoteHistory";
 import { quoteEvents } from "./handlers/quoteEvents";
 
@@ -15,6 +16,7 @@ app.get("/monthly-last", getMonthlyLast);
 app.get("/:type/history", getQuoteHistory);
 app.get("/:type/daily", getDailyQuotes);
 app.get("/:type/min-max", getDailyMinMax);
+app.get("/:type/peak-hours", getPeakHours);
 app.get("/:type/historical/min-max", getHistoricalMinMax);
 app.get("/fetch", fetchQuotes);
 app.get("/events", quoteEvents);