Add: Add UX feature/mentions context

[whats2000]

Description of Changes

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Other (please describe)

Purpose of Change

Let the user directly mention the file/folder/issue in Chat to reduce the reading step

Details

Provide a clear and concise description of the changes made:

• Use the @ for mentioning issue
• Use the # for mentioning file/folder

Related Issues

• [UX/Feature] Mentions for fast reference context #27

Checklist

Please check if your PR fulfills these requirements:

• I have performed a self-review of my own code
• I have commented on my code, particularly in hard-to-understand areas
• I have added tests that prove my fix/feature works
• My changes generate no new warnings
• I have updated the documentation accordingly
• I have added/updated relevant test cases

Additional Context

Verification Steps

Describe the steps to verify the changes:

1. Use the @ for mentioning the issue
2. Use the # for mentioning file/folder
3. Press send a message and the chat will automatically format the context to model

Performance Impact (if applicable)

None

Potential Risks

None

Reviewers

@whats2000

[whats2000]

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