Implement task #67 - add github actions

[brian-ai-assistant-dev[bot]]

To add GitHub Actions for building, testing, and deploying the web application, I have created a main.yml file inside the .github/workflows directory and added a test script to the package.json file. The main.yml file defines two jobs: build and deploy. The build job is triggered on every push to the main branch and performs the steps of checking out the code, installing dependencies, building the application, and running tests. The deploy job is dependent on the build job and is triggered when the build job is successful. It also checks out the code, installs dependencies, and deploys the application to production. I have also provided the updated package.json file with the added `

[netlify[bot]]

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