Clean up .gitignore file

- Remove specific config and test files from tracking
- Add Configs/ directory to ignore list
- Remove unnecessary icon and test script entries

.gitignore

@@ -1,9 +1,6 @@
 app.log
 Settings/settings.json
-Configs/Eltex MES2424 AC - Сеть FTTB 2G, доп.txt
-Configs/конфиг доп 3750-52 с айпи 172.17.141.133 .txt
-DALL·E 2024-12-29 01.01.02 - Square vector logo_ A clean and minimalistic app icon for serial port management software. The design prominently features a simplified rectangular CO.ico
-test.py
+Configs/
 __pycache__/
 Firmware/1.jpg
 Firmware/2