chore: upgrade to ember 4

[ndekeister-us]

Breaking

Officially drop support for Node < 12

Drop support for Ember <3.24

Chore

Upgrade to Ember 4

• run ember-cli-update --to 4.4.0 and yarn install

Also

• specify node version supported in package.json (>= 12)
• update ember-classic-decorator devDeps to v3.0.1 (v2 was not compatible with Ember 4)
• update ember-data devDeps to 4.4.x (v3 was not compatible with Ember 4)
• run yarn-deduplicate && yarn install to clean the yarn.lock
• remove jshint config files used in tests (not relevant anymore, was introduced with first versions of Ember, we now use eslint in tests)
• lint
  • fix some lint errors in test
  • fix template lint errors
  • ⚠️ temporarily move eslint and template lint error to a warning -> Goal of this PR is to make this repo compatible with Ember 4 so that consumers using Ember 4 can use it ; refactoring whole addon to native class / glimmer may introduce some side effects and it seems not a blocking for Ember 4

Remove object-bin export

Taken from mharris717#194 (file no longer exists in ./addon/component) should make embroider happy

Build

Remove ember-decorators from devDeps

It was not used by this repo