[Feature]Add SettingsCell icon

[kishore08-07]

Desired Behavior

Create a SettingsCell icon in Sistent to reduce dependency on @mui/icons-material and ensure design consistency across Layer5 products.

Mockups

https://mui.com/material-ui/material-icons/?query=SettingsCell&selected=SettingsCell

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Contributor Guide

• 🎨 Wireframes and designs for Sistent site in Figma (open invite)

[RajGajjar-01]

can you please assign this to me ? (if you can provide some guidance then it will be better because I am contributing to this project for the first time)