Review Addressor: Add support to diff note with expanded line range

[srtab]

Description:

Overview:
DAIV currently handles comments made directly on changed lines within Merge Request (MR) diffs. The proposed enhancement, Review Addressor, aims to extend DAIV's capabilities to also manage comments created on expanded (contextual) lines that are not part of the actual code changes. This will allow DAIV to address feedback and discussions that occur outside the immediate scope of code modifications.

Benefits:

• Comprehensive Comment Handling: Extends DAIV’s functionality to include both changed and contextual lines in diffs, ensuring all feedback is addressed.
• Increased Efficiency: Automates responses to a broader range of comments, reducing the need for manual intervention.
• Enhanced Review Quality: Ensures that even non-changed code comments are considered, leading to more thorough and higher-quality code reviews.

Key Features:

• Expanded Line Range Parsing: Identify and extract comments from both changed lines and expanded contextual lines in diffs.
• Automated Responses: Generate appropriate replies or actions based on comments on expanded lines.
• Clarification Prompts: Automatically request more information if a comment on an expanded line is ambiguous or unclear.
• Seamless Integration: Ensure that handling expanded line comments complements existing functionalities without conflicts.

Use Cases:

• A reviewer leaves a comment on a contextual line, such as "This helper function could be optimized." DAIV recognizes this and suggests specific optimizations or prompts for more details.
• General comments on surrounding code not directly changed in the MR are addressed automatically, ensuring comprehensive feedback coverage.

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Motivation:

While DAIV effectively manages comments tied directly to code changes within Merge Request diffs, it currently does not address comments made on expanded (contextual) lines that provide additional context but are not part of the actual code modifications. These comments often contain valuable insights, suggestions, or questions that can enhance the overall quality of the codebase. By enabling DAIV to handle these expanded line comments, the tool will offer a more holistic and efficient code review experience, ensuring that all feedback is considered and acted upon, thereby improving project quality and team productivity.