refactor: reorganize project structure following go standards

integrations/jikan/episodes.go

@@ -0,0 +1,20 @@
+package jikan
+
+import (
+	"context"
+	"fmt"
+	"time"
+)
+
+func (c *Client) GetEpisodes(ctx context.Context, animeID int, page int) (EpisodesResponse, error) {
+	if page < 1 {
+		page = 1
+	}
+
+	cacheKey := fmt.Sprintf("anime:%d:episodes:%d", animeID, page)
+	var result EpisodesResponse
+	reqURL := fmt.Sprintf("%s/anime/%d/episodes?page=%d", c.baseURL, animeID, page)
+
+	err := c.getWithCache(ctx, cacheKey, 12*time.Hour, reqURL, &result)
+	return result, err
+}