diagnostics: new scriptmodule to collect system/runtime info

[cmitu]

Add a new RetroPie system item, used to collect diagnostic information and create an archive containing relevant information. The archive created can be optionally uploaded to a RetroPie diagnostics server or just saved locally.

Information collected (grouped in folders):

• system information: a summary produced by inxi, dmesg info, Linux kernel modules loaded, list of .deb packages installed.
• RPI specific information: firmware version, RPIOS info, tvservice info about current video mode and supported modes, DRM modes for KMS platforms, RPI bootloader configuration.
• EmulationStation information: configuration files, head of the log file, input configuration
• Emulator log and configuration: runcommand's last log file, RetroArch configurations.
• input device information: input devices present, udevadm info about each device, output from evemu-desc with detected device capabilities
• RetroPie related configuration: release version, Git branches present, latest 3 log files, packages installed, RetroPie related configuration files from $configdir/all
• audio information: local ALSA configuration, list of available devices, PulseAudio audio sinks listing (if detected running)

Some info is filtered out from log files (IP addresses, username if not pi) using a filter function.

The information collected can be extended by adding a new function _<xyz>_diagnostics and including <xyz> as a collection module in the _generate_diagnostics function - ex. odroid or osmc specific info can be added by defining the _odroid_diagnostics function similar to other collection functions.

MISSING/TODOS:

• the new entry in the RetroPie system doesn't have an icon
• the verbiage in the dialogs could use a second look for rephrasing.
• the upload server (WebDav ?) should work before including this properly
• other info that we might include in the archive - please let me know.
• handle automatic install for upgrades.

[joolswills]

Sorry I've not had a chance to look over this properly yet.