feat: added support for dimensions and v4 of the api

[Aeotrin]

This adds support for Dimensions and upgrades the library to use the v4 urls from Canada Post.

[thejacer87]

looks like the tests are still failing, can you fix those up before a merge plz

[Aeotrin]

Sure, ill take a look. Might have been the most recent tracking update change.

[Aeotrin]

@thejacer87 Did you want me to continue posting patches that match this functionality on the drupal issue: https://www.drupal.org/project/commerce_canadapost/issues/3109833#comment-13887419

Or would you like a new issue made there to match this?
This should also be a major version increment I believe with the constructor definition change.

[thejacer87]

@Aeotrin this package was made when i worked at Acro Media. I'm not actively working on anything drupal right now as my full time job isn't with drupal and i dont have the time to work on Drupal otherwise.

we had 1 or 2 clients using this package. the fact that it's not been updated since means im not sure if they still need it (i'm just happy someone can use it)

@krystalcode was my team lead, so he might have more info. but if Acro has no use for the package/module, i dont mind adding you as a maintainer to help your progress