Change module name from Keycloak -> KeycloakApiRails

[eilers]

I use the keycloak and the keycloak-api-rails gem in my project. This caused some very interesting and subtile issues.

Although I'm aware that renaming the module name is breaking existing code, I really think that the new name is better matching the gem and avoids conflicts.
As the changes in exiting code are very easy to fix, I think this is acceptable.

Thanks for you work btw.. I saved me a lot of time! :)

[looorent]

Thank you @eilers for taking the time to submit this PR, and apologies for my late reply.

• Renaming: I agree that the module renaming makes sense, and I plan to include it in the upcoming major version 1.0.0, as it would be a breaking change for existing code.
• Translation: However, I am not comfortable merging the changes related to translating error messages with I18n. This project is an attempt to remain dependency-agnostic, so I prefer to avoid introducing services like I18n (even though the i18n gem is already included indirectly through activesupport).

Could you remove the modifications of lib/keycloak-api-rails/middleware.rb from this PR?

[eilers]

Dear @looorent !
Great to hear that you will incorporate the change.

Could you remove the modifications of lib/keycloak-api-rails/middleware.rb from this PR?

Yes, I'll remove this change.