Brief Summary of Changes

This pull request refactors both the image and video components to require an explicit Cloudinary instance, removing implicit dependency on the global CloudinaryContext. This change improves code clarity and testability by making dependencies explicit. The test code is also updated to reflect these changes.

Dependency Injection Refactor

• The constructors for both CldImageWidget (lib/image/cld_image.dart) and CldVideoController (lib/video/cld_video_controller.dart) now require a Cloudinary instance to be passed explicitly, instead of optionally falling back to a global singleton.
• All internal usages of cloudinary in these classes now assume it is non-null and directly reference its properties, removing fallback logic and null checks.

Test Updates

• The test file test/cld_video_controller_test.dart is updated to create and configure a local Cloudinary instance instead of using the global CloudinaryContext, and all test usages of CldVideoController are updated to pass this instance explicitly.

Cleanup

• Unused imports of cloudinary_context.dart are removed from both the image and video Dart files, as well as from the test file.

What does this PR address?

• GitHub issue (Add reference - Replace deprecated usage of CloudinaryContext #41)
• Refactoring
• New feature
• Bug fix
• Adds more tests

Are tests included?

• Yes
• No

Reviewer, please note:

Since we don't want to rely on CloudinaryContext internally anymore, as it is deprecated, I made the Cloudinary argument required.

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I ran the full test suite before pushing the changes and all the tests pass.