feat: migrate paqctl to self-hosted Gitea (git.samnet.dev)

All repository URLs updated from GitHub (SamNet-dev/paqctl) to
Gitea (git.samnet.dev/SamNet-dev/paqctl). Third-party references
(hanselime/paqet, Xray, microsocks) remain on GitHub.

gfk/server/mainserver.py

@@ -0,0 +1,36 @@
+import subprocess
+import os
+import time
+import sys
+import signal
+
+
+scripts = ['quic_server.py', 'vio_server.py']
+
+
+def run_script(script_name):
+    # Use sys.executable to run with the same Python interpreter (venv)
+    os.system(f"pkill -f {script_name}")
+    time.sleep(0.5)
+    p = subprocess.Popen([sys.executable, script_name])
+    return p
+
+
+processes = []
+def signal_handler(sig, frame):
+    print('You pressed Ctrl+C!')
+    for p in processes:
+        print("terminated:",p)
+        p.terminate()
+    sys.exit(0)
+
+
+if __name__ == "__main__":
+    p1 = run_script(scripts[0])
+    time.sleep(1)
+    p2 = run_script(scripts[1])
+    processes.extend([p1, p2])  # Modify global list, don't shadow it
+    signal.signal(signal.SIGINT, signal_handler)
+    p1.wait()
+    p2.wait()
+    print("All subprocesses have completed.")