build: add check step

build.zig

@@ -65,6 +65,14 @@ pub fn build(b: *std.Build) void {
     });
     exec_example.root_module.addImport("zterm", lib);
 
+    const tui_example = b.addExecutable(.{
+        .name = "tui",
+        .root_source_file = b.path("examples/tui.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+    tui_example.root_module.addImport("zterm", lib);
+
     // This declares intent for the executable to be installed into the
     // standard location when the user invokes the "install" step (the default
     // step when running `zig build`).
@@ -72,6 +80,17 @@ pub fn build(b: *std.Build) void {
     b.installArtifact(container_example);
     b.installArtifact(padding_example);
     b.installArtifact(exec_example);
+    b.installArtifact(tui_example);
+
+    const exe_check = b.addExecutable(.{
+        .name = "check",
+        .root_source_file = b.path("src/zterm.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const check = b.step("check", "Check if project compiles");
+    check.dependOn(&exe_check.step);
 
     // Creates a step for unit testing. This only builds the test executable
     // but does not run it.