Add improvements to the design assistant feature

[tharikaGitHub]

This PR adds improvements to the design assistant feature. This includes changes from PR #933 as well.

[CLAassistant]

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1 out of 2 committers have signed the CLA.

✅ Tharanidk
❌ Tharika Madurapperuma

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[sonarqubecloud]

Quality Gate failed

Failed conditions
3.5% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud