Add an editorconfig to the project

[thompson-tomo]

Why do we need this improvement?

Allows for consistent coding

How will this change help?

Allows the editors to enforce a particlular code style

Screenshots

No response

How could it be implemented/designed?

• Contributing.md file is updated
• Project gains an .editorconfig file

🚧 Breaking changes

No

👀 Have you checked for similar open issues?

• I checked and didn't find a similar issue

🏢 Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

Are you willing to work on this issue?

Yes I am willing to submit a PR!