fix(babel): Ignore test-files while building

Babel will now ignore *.test.js and *.spec.js files when running frans-script build. __test__ and
__mocks__ are still ignored as well.

fix #5

src/scripts/build/babel.js

@@ -15,7 +15,7 @@ const config = useBuiltinConfig
 
 const ignore = args.includes('--ignore')
   ? []
-  : ['--ignore', '__tests__,__mocks__'];
+  : ['--ignore', '__tests__,__mocks__,*.test.js,*.spec.js'];
 
 const copyFiles = args.includes('--no-copy-files') ? [] : ['--copy-files'];