Add full stat capabilities, fixed utimens and managing old or exotic Android OSes

[Vahlblue]

Hello,
Here is a PR that implements all stat attributes for adb_getattr and fixes my last PR #76 utimens for all cases.

It handles :

• Exotic and old coreutils installed with dynamic detection and switching for the best available.
• From Android 4.1 to the latest (some features are limited on some versions).
• Automatic fallback to ls with added seconds and timezone support if stat does not work
• Caching stat output to avoid calling stat each time
• Handling of timezone (old Android without anytime zones, different timezone between the computer and the Android device and summer time)

Tested on :

• Samsung Fold 7 (Android 16)
• OnePlus 9 (Android 14)
• LG G6 (Android 9)
• Inside AVD : Android from 4.1 (no images older available directly inside AVD) to 9

For those devices I tested that a touch and a stat always output the same information and that other features are working.
I used my modification to sync to the second all my files of all my devices to be able to sync on my NAS.

To be noted : from Android 6 to 8 utimens cannot work due to a bug in the old toybox coreutils (details in the code comments). They is no workaround possible. The only way is a rooted device and busybox for example installed which will be automatically chosen by the detections capabilities.

Since it comes at a cost of performance (all file must be individually stated) we could imagine some solutions :

• User option to fallback to the incomplete ls output.
• Maintain a adb shell session continuously.
• Trying to stat all files in one line when exploring a folder.