new feature: Basic Ruby binding

[erickguan]

Feature Description

I am interested in helping release the first Ruby binding. Before release, I would happy to get OpenDAL Ruby binding to a demoable state.

Problem and Solution

The Ruby binding in OpenDAL implements several methods within the Operator and Metadata classes. I would like to see the following features added to the Ruby binding:

• Lister
• Basic IO class (similar to File in Python binding)
• Capability
• Retry layer
• Operator:
  • list
  • create_dir
  • delete
  • rename
  • remove_all
  • copy
  • open
  • layer

With these features implemented, I could create a few examples in Ruby to share.

Additional Context

Other problems:

• The prevalent class loader, "Zeitwerk", will not load OpenDAL without additional configuration. Zeitwerk expects lib/my_gem/version.rb to define MyGem::VERSION, for example.
• Fiber, Ruby's cooperative concurrency mechanism, has relatively low adoption. However, OpenDAL includes features that are only implemented asynchronously, which could pose a challenge when mapping them to Ruby's concurrency model.

Are you willing to contribute to the development of this feature?

• [X] Yes, I am willing to contribute to the development of this feature.

[Xuanwo]

Wow, @erickguan, that's fantastic! I'm looking forward to working with you.

[erickguan]

I’m grateful that you got the project rolling and appreciate your vision.