Create Minesweeper Game with Ionic + Capacitor + Angular

Create Minesweeper game, like this one
https://play.google.com/store/apps/details?id=Draziw.Button.Mines
It must have:
* Admob ads interstitial
* Google Play Leaderboards

All texts in app must be translatable using i18n (for reference, see https://www.toptal.com/angular-js/internationalize-your-angularjs-app):

// /src/app/i18n/en.json
{
"HELLO_WORLD": "Hello World"
}

// /src/app/i18n/pt.json
{
"HELLO_WORLD": "Olá, mundo"
}

<!--template -->
<div>{{'HELLO_WORLD' | translate}}</div>

When user clicks play, show interstitial ad and save the time the ad was shown in local storage (last_time_ad_was_shown).
When user clicks play again, show interstitial ad only if (now - last_time_ad_was_shown > 7minutes)