feat: add "Contribute" section to improve community engagement

### 🚀 The feature

### Description

The current website provides information about the app but does not actively encourage users or developers to contribute to the project.

### Proposed Solution

Add a new "Contribute" section to the homepage that:

* Explains that Resonate is an open-source project
* Encourages users to contribute
* Provides a clear call-to-action linking to the GitHub repository

### Benefits

* Increases community engagement
* Encourages open-source contributions
* Improves user interaction

### Additional Context

The section will be styled consistently with the existing UI and include animations for better user experience.

### Motivation, pitch

Currently, the website provides information about the Resonate app but does not actively guide users or developers on how they can contribute to the project.

Since Resonate is an open-source platform, having a dedicated "Contribute" section would make it easier for visitors to understand how they can get involved. This is especially helpful for new contributors who may not be familiar with the project structure or contribution process.

The goal of this feature is to improve community engagement by adding a clear call-to-action that links to the GitHub repository and encourages participation.

This change will enhance the overall purpose of the website by not only showcasing the product but also promoting collaboration and open-source contributions.