build: enable SSE4.1+FMA+AVX for silicon_sse compilation unit

Was compiling with baseline SSE2 only. Now matches bone_sse target.
Free wins: packParticleColor 1.2x->4.6x, rotateMatByQuat 3.4x->4.0x,
normalizeVec3 1.1x->1.8x, mulMat3x4InPlace 1.4x->1.7x.

build.zig

@@ -106,7 +106,7 @@ pub fn build(b: *std.Build) void {
         .name = "silicon_sse",
         .root_module = b.createModule(.{
             .root_source_file = b.path("src/silicon/silicon_sse.zig"),
-            .target = target,
+            .target = bone_sse_target, // SSE4.1+FMA+AVX, same as bone_sse
             .optimize = .ReleaseFast,
         }),
     });
@@ -162,7 +162,11 @@ pub fn build(b: *std.Build) void {
             .name = "bench_silicon_sse",
             .root_module = b.createModule(.{
                 .root_source_file = b.path("src/silicon/silicon_sse.zig"),
-                .target = bench_target,
+                .target = b.resolveTargetQuery(.{
+                    .cpu_arch = .x86,
+                    .os_tag = .linux,
+                    .cpu_features_add = std.Target.x86.featureSet(&.{ .sse, .sse2, .sse3, .sse4_1, .fma, .avx }),
+                }),
                 .optimize = .ReleaseFast,
             }),
         });