Add a `devcontainer.json` for all Dependency Needs.

Issue Description

I propose adding a devcontainer.json file to the Our Tech Community repository. This file will enable developers to set up a consistent development environment quickly using GitHub Codespaces or other similar services.

Why is this needed?

A devcontainer.json file:

• Standardizes development environments across team members, reducing configuration discrepancies.
• Simplifies onboarding for new contributors.
• Ensures that the project's dependencies and tools are isolated, avoiding conflicts with the developer's local environment.
• Facilitates automated testing and continuous integration.

Proposed Changes

• Create a devcontainer directory in the root of the repository.
• Add a devcontainer.json file to the devcontainer directory, specifying the necessary development environment setup.
• Update the README with instructions for using the development container.

Additional Information

• There is already a .gitpod.yml file that mentions the dependencies. But the devcontainer.json format is more widely used and is supported by more platforms.
• If you have any additional context, ideas, or suggestions, please feel free to share them here.

🤍 Thank you, OTC.

Start by reading the existing .gitpod.yml to identify the dependencies and development setup it specifies. Create the requested devcontainer directory and devcontainer.json, then update the README with usage instructions; done means the container configuration covers the listed dependencies and the documentation explains how to use it.