Document coding standards

[daithi-coombes]

Document coding standards for Solidity and TypeScript for the trusted-seed

• Document the coding standards in readable language within a markdown file in the project root.
• The relative rc files will be the golden source of truth (eslintrc, solhintrc).
• Integrate linting into github actions on all commits

[daithi-coombes]

I'm using the following as a template:

• https://success.vanillaforums.com/kb/articles/226-coding-standard-typescript#4.-namespaces-types-and-interfaces
• https://docs.soliditylang.org/en/latest/style-guide.html

both need to be stripped down to the bare minimum imo and given this project is open source extra emphasis may be needed for code documenting and maybe even auto-api generation 🤔

[daithi-coombes]

eslintrc has been worked on in #2