Added frontend deploy

[kryczkal]

This pull request introduces a complete setup for hosting a frontend application on AWS, including deployment scripts, Terraform modules, and configurations. The changes encompass the deployment pipeline, Terraform resource definitions, and output configurations to enable seamless integration with AWS services such as S3 and CloudFront.

Deployment Pipeline Enhancements:

• Frontend Deployment Script: Added scripts/actions/deploy_frontend.bash to automate the frontend deployment process. It builds the Flutter web application, uploads files to an S3 bucket, and invalidates the CloudFront cache for immediate updates.

Terraform Configuration Updates:

• Frontend Hosting Module: Created a new Terraform module (terraform/modules/frontend_hosting) to provision AWS resources for frontend hosting, including an S3 bucket, CloudFront distribution, and related policies.
• Main Configuration: Integrated the frontend_hosting module into the main Terraform configuration (terraform/main/main.tf) to enable frontend hosting with API routing via CloudFront.

Output Management:

• Terraform Outputs: Added outputs in terraform/main/outputs.tf to expose essential details like the frontend URL, S3 bucket name, and CloudFront distribution ID for deployment scripts.
• Module Outputs: Defined outputs in terraform/modules/frontend_hosting/outputs.tf to provide resource identifiers for the S3 bucket and CloudFront distribution.

Variable Definitions:

• Frontend Hosting Variables: Added variables in terraform/modules/frontend_hosting/variables.tf for project name and API base URL to ensure flexibility and reusability of the module.