basic_ruby/debugging/imgs: add images for vscode rdbg debugging content

[XAJX179]

Because

Need images for the content in the PR #30267

This PR

• adds images to ruby/basic_ruby/debugging/img/ folder.

Issue

Related to #30210

Additional Information

Pull Request Requirements

• I have thoroughly read and understand The Odin Project curriculum contributing guide
• The title of this PR follows the location of change: brief description of change format, e.g. Intro to HTML and CSS lesson: Fix link text
• The Because section summarizes the reason for this PR
• The This PR section has a bullet point list describing the changes in this PR
• If this PR addresses an open issue, it is linked in the Issue section
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• If any lesson files are included in this PR, they follow the Layout Style Guide