feat: KSPlayer as an option for iOS + other improvements (#1266)

scripts/ios/install-metal-toolchain.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if [[ "$(uname -s)" != "Darwin" ]]; then
+  echo "Metal Toolchain install is only relevant on macOS."
+  exit 0
+fi
+
+if xcrun --find metal >/dev/null 2>&1; then
+  echo "Metal tool found: $(xcrun --find metal)"
+  exit 0
+fi
+
+echo "Metal toolchain missing."
+echo "Installing via: xcodebuild -downloadComponent MetalToolchain"
+echo "If this fails, ensure Xcode is selected (xcode-select) and you accepted the license."
+echo
+
+xcodebuild -downloadComponent MetalToolchain
+
+echo
+echo "Done. Verify with: xcrun --find metal && xcrun metal -v"
+