time: Add after or equal and before or equal

[sashamelentyev]

Need AfterOrEqual and BeforeOrEqual methods in time package

If you need check t after or equal you code this

if time.After(u) || time.Equal(u) {
    // ...
}

With needed methods

if time.AfterOrEqual(u) {
    // ...
}

Code look cleaner

#49252

[moredure]

you can just use !t.Before(u) for same purpose

[sashamelentyev]

@moredure thank you!