feat: Update inbox card design

[iamsivin]

Pull Request Template

Description

This PR contains a new design for the inbox card in the Inbox view.

Fixes https://linear.app/chatwoot/issue/CW-3082/update-the-design-for-the-card-based-on-the-feedback

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Screenshot

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented on my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[linear]

CW-3082 Update the design for the card based on the feedback

[scmmishra]

@iamsivin I abstracted the resize observer out as a custom directive, it can be re-used acorss the codebase now