Add support for insertOrIgnore()

[darksworm]

The recently released laravel version 5.8.33 has a new feature - insertOrIgnore.

I think that this is a very useful feature and would love to see it implemented in this project.

v5.8.33 release notes

[Smolevich]

@darksworm, join into slack channel. Link here

[MightyPork]

Still an issue and Laravel now uses this method internally, so there is a crash with MongoDB

RuntimeException: This database engine does not support inserting while ignoring errors.
    at Illuminate\Database\Query\Grammars\Grammar->compileInsertOrIgnore(Grammar.php:1197)
    at Illuminate\Database\Query\Builder->insertOrIgnore(Builder.php:3778)
    at Illuminate\Cache\DatabaseStore->add(DatabaseStore.php:209)
    at Illuminate\Cache\Repository->add(Repository.php:343)
    at Illuminate\Cache\RateLimiter->increment(RateLimiter.php:163)
    at Illuminate\Cache\RateLimiter->hit(RateLimiter.php:148)
    at FlowBox\Http\Controllers\Auth\LoginController->incrementLoginAttempts(ThrottlesLogins.php:35)
    at FlowBox\Http\Controllers\Auth\LoginController->login(AuthenticatesUsers.php:57)
    at Illuminate\Routing\Controller->callAction(Controller.php:54)
    at FlowBox\Http\Controllers\Controller->callAction(Controller.php:157)
    at Illuminate\Routing\ControllerDispatcher->dispatch(ControllerDispatcher.php:43)
    ... 63 more

MongoDB Grammar just extends the framework Grammar without any changes, so this method remains unimplemented

    /**
     * Compile an insert ignore statement into SQL.
     *
     * @param  \Illuminate\Database\Query\Builder  $query
     * @param  array  $values
     * @return string
     *
     * @throws \RuntimeException
     */
    public function compileInsertOrIgnore(Builder $query, array $values)
    {
        throw new RuntimeException('This database engine does not support inserting while ignoring errors.');
    }