Update Contribution Guidelines

[Traxmaxx]

Problem

Improve the contribution guidelines with missing informations for frontend development onboarding. Also add links to internal document references and cross-reference the QUickstart Guide for adding a config.toml

Solution

Instruvtions are missing some key steps which is referecnes externally. This PR add the missing steps and cross-reference external documentation for things like setting up the config.toml

Changes Made

• Link references to internal sections
• Fix spelling mistakes
• Add content for missings steps
• Improve the README inside /dashboard for frontend specific thigns (TBD)

How to Test

Read the .md files and make sure they parse fine. That's it.

Screenshots

None needed. Use GitHub Markdown preview

Notes

Checklist

• Code follows the contributing guidelines
• Changes have been thoroughly tested
• Documentation has been updated, if necessary
• Any dependencies have been added to the project, if necessary

Reviewers

@[username of the reviewer]

[jakepage91]

Just these three comments. Everything thing else looks super great and clean!