[tools] add separate maxwell disassembler, ir dumper, and spirv translator (#3453)

why not?

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3453
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

tools/maxwell-spirv/main.cpp

@@ -0,0 +1,26 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+
+int SpirvReferenceImpl(int argc, char *argv[]);
+int SpirvShaderRecompilerImpl(int argc, char *argv[]);
+
+int main(int argc, char *argv[]) {
+    if (argc < 2) {
+        printf("usage: %s [input file]\n"
+            "Specify -n to use a recompiler that is NOT tied to the shader recompiler\n"
+            "aka. a reference recompiler\n"
+            "RAW SPIRV CODE WILL BE SENT TO STDOUT!\n", argv[0]);
+        return EXIT_FAILURE;
+    }
+    if (argc >= 3) {
+        if (::strcmp(argv[2], "-n") == 0
+        || ::strcmp(argv[2], "--new") == 0) {
+            return SpirvReferenceImpl(argc, argv);
+        }
+    }
+    return SpirvShaderRecompilerImpl(argc, argv);
+}