chore: include all src/* in coverage report

Author: hesreallyhim

vitest.config.js

@@ -0,0 +1,11 @@
+const { defineConfig } = require('vitest/config');
+
+module.exports = defineConfig({
+  test: {
+    coverage: {
+      provider: 'v8',
+      all: true,
+      include: ['src/**/*.js']
+    }
+  }
+});