feat: user verification

[mimoham24]

Overview

What I've done

What I haven't done

create email content

How I tested

Which point I want you to review particularly

Memo

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (feat/authentication-system@2632fe9). Click here to learn what that means.
The diff coverage is n/a.

@@                      Coverage Diff                      @@
##             feat/authentication-system      #83   +/-   ##
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  Coverage                              ?   16.52%           
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  Files                                 ?      250           
  Lines                                 ?    43361           
  Branches                              ?        0           
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  Hits                                  ?     7165           
  Misses                                ?    35180           
  Partials                              ?     1016           

[rot1024]

ok for now but also remember this way:

var timeNow = time.Now

func hoge() {
  now := timeNow() // instead of time.Now()
}

func Test_hoge() {
	now := time.Time{...}
	timeNow = func () time.Time {
		return now
	}

	// test
}

NOTE: t.Parallel() is not supported