Add "Open in External Player" button to ExoPlayer video overlay

[Copilot]

Internal ExoPlayer can be laggy for certain videos. This adds a button to the video playback overlay that lets users open the current video in any installed video app (VLC, MX Player, etc.) via an Android chooser dialog.

Changes (in mediaslider submodule)

• Layout (exo_player_control_view.xml): Added exo_external_player ImageButton at the end of the controls row with correct D-pad focus chain (slideshow ↔ external_player)
• Icon (ic_open_external.xml): New vector drawable — "open in new window" symbol, white fill to match existing buttons
• ExoPlayerView.kt: Initializes externalPlayerBtn and routes its click to the existing onButtonClick(Int) callback
• MediaSliderView.kt: Handles R.id.exo_external_player by calling openInExternalPlayer(), which fires ACTION_VIEW with video/* on the current item's URL wrapped in Intent.createChooser; shows a toast if no app can handle it
• strings.xml: Added open_in_external_player (chooser title) and no_external_player_found (fallback toast)

Note: Changes live in the mediaslider submodule (giejay/MediaSliderView). The main repo commit updates the submodule reference to the new commit. The submodule branch will need to be pushed to MediaSliderView before merging.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• dl.google.com
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED --add-opens=java.base/java.nio.charset=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED -Xmx2048m -Dfile.encoding=UTF-8 -Duser.country -Duser.language=en -Duser.variant -cp /home/REDACTED/.gradle/wrapper/dists/gradle-8.9-bin/90cnw93cvbtalezasaz0blq0a/gradle-8.9/lib/gradle-daemon-main-8.9.jar -javaagent:/home/REDACTED/.gradle/wrapper/dists/gradle-8.9-bin/90cnw93cvbtalezasaz0blq0a/gradle-8.9/lib/agents/gradle-instrumentation-agent-8.9.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 8.9 (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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