Restructure code
create route api/captcha in file index.php
testGetCaptchaShouldBeCaptchaString
refactor return captcha with format
testCaptchaTostring
testGetCaptchaStringShouldBe2PlusTwo
testGetCaptchaStringShouldBe2PlusTwo
testGetCaptchaStringWithoutSetRandomizerShouldNotBeNull
Refactor CaptchaController
Use CaptchaController in api/captcha
Refactor Index.php Route use Controller As Service
change index.php file name be routing.php