Enhance Dockerfile and API for yt-dlp integration

- Install Deno as a JavaScript runtime for yt-dlp in the Dockerfile.
- Add configuration for yt-dlp to support cookies and JavaScript runtime selection.
- Update API to handle cookies for YouTube bot detection and allow specifying the JavaScript runtime.
- Introduce new environment variables for cookie management and JavaScript runtime configuration in README.

Dockerfile

@@ -3,15 +3,25 @@ FROM node:20-alpine
 # Set default locale to German
 ENV LOCALE=de
 
-# yt-dlp und ffmpeg installieren
+# yt-dlp, ffmpeg und deno (JavaScript Runtime für YouTube) installieren
 RUN apk add --no-cache \
     python3 \
     py3-pip \
     ffmpeg \
-    && pip3 install --no-cache-dir --break-system-packages yt-dlp
+    curl \
+    unzip \
+    && pip3 install --no-cache-dir --break-system-packages yt-dlp \
+    && curl -fsSL https://deno.land/install.sh | sh \
+    && mv /root/.deno/bin/deno /usr/local/bin/deno \
+    && chmod +x /usr/local/bin/deno
 
 WORKDIR /app
 
+# yt-dlp Konfiguration erstellen (für deno als JS-Runtime)
+RUN mkdir -p /root/.config/yt-dlp && \
+    echo "--js-runtimes deno" > /root/.config/yt-dlp/config && \
+    echo "--no-warnings" >> /root/.config/yt-dlp/config
+
 # Package-Dateien kopieren und Dependencies installieren
 COPY package*.json ./
 RUN npm ci