[Feature request]: "Install or Restore all Cores from a Directory"

Description

Android does not allow the core directory to be changed:

• https://github.com/libretro/RetroArch/issues/6749

Current Workflow (repetitive)

The current workaround is to

• Download the cores from the Online Updater if you have access to the internet.

Restore the cores manually (required if you don't have access to the internet):

• Navigate to Settings -> Core -> Manage Cores -> Install or Restore a Core.
• Select and install the desired core file (e.g., bsnes2014_accuracy_libretro_android.so).
• Repeat steps 1 & 2 for each additional core (bsnes_hd_beta_libretro_android.so, bsnes_libretro_android.so, bsnes_mercury_accuracy_libretro_android.so, etc.).

Proposed Workflow (streamlined)

Adding an "Install or Restore all Cores from a Directory" option under Settings -> Core -> Manage Cores would be a significant time-saver. This would allow users to select a directory containing multiple compatible core files (.so) and install/restore them all at once.

• Navigate to Settings -> Core -> Manage Cores -> Install or Restore all Cores from a Directory.
• Select the directory containing all the desired core files (.so).
• RetroArch restores all compatible cores within the selected directory.

Version/Commit

You can find this information under Information/System Information

• RetroArch: 1.17.0

Environment information

• OS: Android

Start by tracing the existing Settings -> Core -> Manage Cores -> Install or Restore a Core flow on Android, then inspect how a directory is selected and how compatible .so files are restored. Done means a user can select one directory and restore all compatible cores without repeating the operation for each file.