Refactor and update various components in LAB2 design

- Updated node connections in lab_2.bda and pak_depak.bda to correct source and target references.
- Modified pak_depak_wrapper.vhd to reflect the correct timestamp.
- Rearranged the order of components in pak_depak.bd for clarity and consistency.
- Adjusted BRAM writer logic in bram_writer.vhd for improved data handling and comments for clarity.
- Enhanced depacketizer.vhd with additional comments and logic adjustments for better data reception.
- Refined divider_by_3.vhd to optimize division calculations and improve clarity in comments.
- Improved img_conv.vhd with better state management and comments for the convolution process.
- Updated led_blinker.vhd to enhance readability and maintainability with clearer comments.
- Enhanced packetizer.vhd to improve data handling and added comments for better understanding.
- Adjusted rgb2gray.vhd to include standard library comments for consistency.
- Updated test.py to improve image processing logic and added visualization for differences.
- Added new binary files for test_nopath.exe and archived project files for lab2 and pak_depak.
- Updated Vivado project files to ensure correct paths and settings for synthesis and implementation.

.gitignore

@@ -76,4 +76,7 @@ vivado*.backup.log
 **/design/**/sim/
 **/design/**/synth/
 **/design/**/ui/
-**/design/**/hw_handoff/
+**/design/**/hw_handoff/
+
+# Other files
+**/test/*.zip