ember-cli 4.0.0 on Node.js NPM

#9679 Bump ember-page-title from v6.2.2 to v7.0.0 @raido
#9694 test in node 16 LTS @kellyselden
#9696 commands/init: Fix --yarn usage @Turbo87
#9659 Ensure ember-classic ember-try scenario uses Ember 3.x @rwjblue
#9661 Set default CI config blueprints to run all builds @elwayman02
#9666 Remove IE11 comments from config/target.js in app blueprint @bertdeblock
#9667 Update eslint-plugin-qunit to v7 in blueprint @bmish
#9670 Don't emit an error when the lint:fix script fails post blueprint generation @bertdeblock
#9574 Update link to Discord in README.md @MelSumner
#9613 Fix test that started failing with v2.17.0 of qunit @kategengler
#9579 Add --ci-provider option to ember new and ember addon @snewcomer
#9618 Reload _packageInfo as part of reloadPkg @brendenpalmer
#9563 Add pnpm support to ember install command @Turbo87
#9580 Add .lint-todo to prettier ignore @elwayman02
#9589 Add link to visualizer to perf guide @mehulkar
#9595 Add support for addons.exclude and addons.include options @bertdeblock
#9623 Update app/addon blueprints to use ember-auto-import@2 @rwjblue
#9619 Update watch-detector to 1.0.1 @colenso
#9605 Properly set loglevel flag for npm @jrvidal
#9609 Ignore additional ember-try files for apps and addons @bertdeblock
#9644 Default ember new and ember addon to use GitHub Actions @rwjblue

Thank you to all who took the time to contribute!

ember-cli 4.0.0 Release 4.0.0 on Node.js NPM