Restructure project files and add README, docs, and tools

docs/gnome-fingerprint-feedback-deploy.md

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+# GNOME/GDM Fingerprint Feedback Deployment
+
+This repository provides a team-friendly deployment path for faster visible
+fingerprint failure feedback on Fedora systems using authselect.
+
+## Files
+- `tools/gnome_fprint_feedback_setup.sh`
+- `tools/gnome_fprint_feedback_rollback.sh`
+
+## Apply
+
+Default (recommended):
+
+```bash
+cd /path/to/Fedora_Fingerprint_Feedback
+sudo ./tools/gnome_fprint_feedback_setup.sh
+```
+
+Custom tuning:
+
+```bash
+sudo ./tools/gnome_fprint_feedback_setup.sh --max-tries 2 --timeout 6
+```
+
+## Validate
+
+```bash
+authselect current --raw
+authselect check
+grep pam_fprintd /etc/authselect/custom/local-fprint-feedback/fingerprint-auth
+grep pam_fprintd /etc/pam.d/fingerprint-auth
+```
+
+Expected effective line:
+
+```text
+pam_fprintd.so max-tries=2 timeout=6
+```
+
+## Rollback
+
+Restore previous authselect selection saved during setup:
+
+```bash
+cd /path/to/Fedora_Fingerprint_Feedback
+sudo ./tools/gnome_fprint_feedback_rollback.sh
+```
+
+Rollback and remove custom profile directory:
+
+```bash
+sudo ./tools/gnome_fprint_feedback_rollback.sh --remove-profile
+```
+
+## Notes
+- Scripts must be run as root.
+- Setup stores previous `authselect current --raw` in:
+  - `/etc/authselect/custom/local-fprint-feedback/.previous-authselect-raw`
+- If no saved state exists, rollback falls back to:
+  - `local with-fingerprint with-silent-lastlog with-mdns4`