feat: add installation script for yt-dlp and update package.json

scripts/install-yt-dlp.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env sh
+set -eu
+
+if command -v yt-dlp >/dev/null 2>&1; then
+  echo "yt-dlp already installed: $(command -v yt-dlp)"
+  yt-dlp --version
+  exit 0
+fi
+
+if command -v pacman >/dev/null 2>&1; then
+  sudo pacman -S --needed yt-dlp
+elif command -v apt-get >/dev/null 2>&1; then
+  sudo apt-get update
+  sudo apt-get install -y yt-dlp
+elif command -v dnf >/dev/null 2>&1; then
+  sudo dnf install -y yt-dlp
+elif command -v brew >/dev/null 2>&1; then
+  brew install yt-dlp
+elif command -v pipx >/dev/null 2>&1; then
+  pipx install yt-dlp
+elif command -v python3 >/dev/null 2>&1; then
+  python3 -m pip install --user --upgrade yt-dlp
+else
+  echo "Could not find pacman, apt-get, dnf, brew, pipx, or python3 to install yt-dlp." >&2
+  exit 1
+fi
+
+if ! command -v yt-dlp >/dev/null 2>&1; then
+  echo "yt-dlp installed but is not on PATH. Restart your shell or add the installer bin directory to PATH." >&2
+  exit 1
+fi
+
+echo "yt-dlp installed: $(command -v yt-dlp)"
+yt-dlp --version