Refactor and clean up project files

- Removed obsolete GraphML file `pak_depak.bda` and UI file `bd_c9b29a54.ui`.
- Updated `rgb2gray.vhd` to improve signal handling and state machine logic.
- Created new Vivado project files for `depacketizer_test`, including testbench configuration.
- Adjusted `pak_depak.xpr` to disable the FIFO module and set the top module correctly.
- Updated `rgb2grey_test.xpr` to modify simulation launch settings.

LAB2/src/packetizer.vhd

@@ -49,7 +49,6 @@ BEGIN
                 data_buffer <= (OTHERS => '0');
 
                 m_axis_tdata <= (OTHERS => '0');
-                m_axis_tvalid_int <= '0';
 
                 s_axis_tready_int <= '0';
                 m_axis_tvalid_int <= '0';