Add module (#3)

Author: davidgranstrom

build.zig

@@ -3,6 +3,9 @@ const std = @import("std");
 pub fn build(b: *std.Build) void {
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
+    const zigosc = b.addModule("zigosc", .{
+        .root_source_file = b.path("src/root.zig"),
+    });
 
     const lib = b.addStaticLibrary(.{
         .name = "zigosc",
@@ -12,6 +15,7 @@ pub fn build(b: *std.Build) void {
     });
 
     b.installArtifact(lib);
+    zigosc.linkLibrary(lib);
 
     const lib_unit_tests = b.addTest(.{
         .root_source_file = b.path("src/root.zig"),