Add Lian Li SL-INF wireless tools and SignalRGB plugin

Proof-of-concept tools for the UNI FAN SL-INF Wireless kit (SLV3 TX/RX
dongles 0416:8040/8041): a Python scan/colour script, tinyuz helpers, a
JavaScript tinyuz encoder, the SignalRGB plugin and tests.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

build-src/tuzd_main.c

@@ -0,0 +1,17 @@
+// tuzd <expected_size>: decompress stdin with the reference tinyuz decoder to stdout.
+#include <stdio.h>
+#include <stdlib.h>
+#include <io.h>
+#include <fcntl.h>
+#include "tinyuz/decompress/tuz_dec.h"
+int main(int argc, char** argv) {
+    static unsigned char in[65536], out[65536];
+    _setmode(_fileno(stdin), _O_BINARY);
+    _setmode(_fileno(stdout), _O_BINARY);
+    size_t n = fread(in, 1, sizeof(in), stdin);
+    tuz_size_t size = (tuz_size_t)atoi(argv[1]);
+    tuz_TResult r = tuz_decompress_mem(in, (tuz_size_t)n, out, &size);
+    if (r != tuz_STREAM_END) { fprintf(stderr, "decode result %d\n", (int)r); return 1; }
+    fwrite(out, 1, size, stdout);
+    return 0;
+}