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/tuzc_main.cpp

@@ -0,0 +1,25 @@
+// tuzc: compress stdin with tinyuz (4 KB dict) to stdout; verifies by round-trip.
+#include <cstdio>
+#include <vector>
+#include <io.h>
+#include <fcntl.h>
+#include "tinyuz/decompress/tuz_dec.h"
+extern "C" size_t tuz_compress_mem(const unsigned char*, size_t, unsigned char*, size_t, size_t);
+extern "C" size_t tuz_max_compressed_size(size_t);
+int main() {
+    _setmode(_fileno(stdin), _O_BINARY);
+    _setmode(_fileno(stdout), _O_BINARY);
+    std::vector<unsigned char> in;
+    int c;
+    while ((c = getchar()) != EOF) in.push_back((unsigned char)c);
+    if (in.empty()) return 2;
+    std::vector<unsigned char> out(tuz_max_compressed_size(in.size()));
+    size_t n = tuz_compress_mem(in.data(), in.size(), out.data(), out.size(), 4096);
+    if (n == 0) return 3;
+    std::vector<unsigned char> back(in.size());
+    tuz_size_t back_size = (tuz_size_t)back.size();
+    if (tuz_decompress_mem(out.data(), n, back.data(), &back_size) != tuz_STREAM_END
+        || back_size != in.size() || back != in) return 4;
+    fwrite(out.data(), 1, n, stdout);
+    return 0;
+}