chore: update to new zig module system

build.zig

@@ -1,21 +1,23 @@
 const std = @import("std");
 
 pub fn build(b: *std.build.Builder) void {
-    // Standard release options allow the person running `zig build` to select
-    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
-    const mode = b.standardReleaseOptions();
+    const target = b.standardTargetOptions(.{});
+    const mode = b.standardOptimizeOption(.{});
 
-    const lib = b.addStaticLibrary("zig-glib-log", "src/main.zig");
-    lib.setBuildMode(mode);
+    b.addModule(.{
+        .name = "zig-glib-log",
+        .root_source_file = .{ .path = "src/main.zig" },
+    });
+
+    const lib = b.addStaticLibrary(.{
+        .name = "zig-glib-log",
+        .root_source_file = .{ .path = "src/main.zig" },
+        .target = target,
+        .optimize = mode,
+    });
 
     lib.linkLibC();
     lib.linkSystemLibrary("glib-2.0");
 
     lib.install();
-
-    const main_tests = b.addTest("src/main.zig");
-    main_tests.setBuildMode(mode);
-
-    const test_step = b.step("test", "Run library tests");
-    test_step.dependOn(&main_tests.step);
 }