## Description
This PR contains below changes in ADS package,
1. Removed contributing, changelog, and readme
2. Made Avatar image static
3. Updated toggle group class
Fixes#35802
## Automation
/ok-to-test tags="@tag.Sanity, @tag.IDE"
### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results -->
> [!TIP]
> 🟢🟢🟢 All cypress tests have passed! 🎉🎉🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/10485375933>
> Commit: 6b35df2dd3da9e30e7e1e554a3645c2102427c8b
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=10485375933&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.Sanity, @tag.IDE`
> Spec:
> <hr>Wed, 21 Aug 2024 07:50:47 UTC
<!-- end of auto-generated comment: Cypress test results -->
## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [x] No
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Enhanced `ToggleButtonGroup` component with a new `className` prop for
improved styling flexibility.
- Streamlined visual representation of avatars in `AvatarGroup`, now
featuring a consistent image URL.
- **Bug Fixes**
- Removed the default image URL from `AvatarStory`, potentially
improving focus on other attributes.
- **Documentation**
- Updated interfaces and properties to reflect the latest enhancements
in `ToggleButtonGroup`.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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