Introduces sprite channel processing pipeline

Adds modules for sprite operations, including opcode decoding, register handling, and vertical pipeline calculations. Replaces legacy scheduler with a more modular and efficient design. Updates constraints for clock timing.

Enhances sprite rendering pipeline with improved modularity and scalability.

src/SpriteChannel.ucf

@@ -0,0 +1,5 @@
+# TEMPERATURE = 50 C;
+
+NET I_CLK	                    LOC = B8; 
+NET I_CLK	                    TNM_NET = CLOCK;
+TIMESPEC TS_CLOCK = PERIOD CLOCK 230 MHz HIGH 50 %;