feat: add initial project structure with core configuration files

Add Makefile with GCC build targets for rpubsub server and load_test binary, 
implement high-performance multi-threaded WebSocket pub/sub server in rpubsub.c 
with lock-free task queue and worker thread pool, create load_test.c for 
benchmarking with 1000 subscribers and 10 publishers over WebSocket, and 
include test.py asyncio-based integration test script

Makefile

@@ -0,0 +1,10 @@
+
+build:
+	gcc -D_GNU_SOURCE -O3 -march=native -mtune=native -flto -pthread rpubsub.c -o rpubsub -lrt -std=c11
+	gcc -O3 -march=native -std=c11 -o load_test load_test.c -lm -lrt
+
+clean:
+	rm -f rpubsub load_test
+
+
+