Issue #3203654: Start a 4.0.x branch to support Google Analytics 4 Property

GA4 Unit Tests

• Test main object GoogleAnalyticsReportsApiFeed::service
• Test main methods (isAuthenticated) of the object
• Test APIs from https://developers.google.com/analytics/devguides/reporting/data/v1 are available to call

README

• Better wording

Tested results

./vendor/bin/phpunit -c web/core/phpunit.xml.dist web/modules/custom/google_analytics_reports

Testing web/modules/custom/google_analytics_reports
Drupal\Tests\google_analytics_reports\Unit\GoogleAnalyticsReportsApiFeed\GoogleAnalyticsReportsApiFeed
 ✔ Obj data set #0
 ✔ Obj data set #1
 ✔ Obj method data set #0
 ✔ Obj method data set #1
 ✔ Obj method data set #2
 ✔ Obj method data set #3
 ✔ Obj method data set #4
 ✔ Obj method data set #5
 ✔ Obj method data set #6
 ✔ Obj method data set #7

Time: 1.02 seconds, Memory: 14.00 MB