add(examples/styles): color palette to showcase all available colors to render (except for .default)

build.zig

@@ -15,6 +15,7 @@ pub fn build(b: *std.Build) void {
         grid,
         mixed,
         // styles:
+        palette,
     };
 
     const example = b.option(Examples, "example", "Example to build and/or run. (default: vertical)") orelse .vertical;
@@ -96,6 +97,15 @@ pub fn build(b: *std.Build) void {
     });
     mixed.root_module.addImport("zterm", lib);
 
+    // styles:
+    const palette = b.addExecutable(.{
+        .name = "palette",
+        .root_source_file = b.path("examples/styles/palette.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+    palette.root_module.addImport("zterm", lib);
+
     // mapping of user selected example to compile step
     const exe = switch (example) {
         // elements:
@@ -108,6 +118,7 @@ pub fn build(b: *std.Build) void {
         .grid => grid,
         .mixed => mixed,
         // styles:
+        .palette => palette,
     };
     b.installArtifact(exe);