Update development guidelines

[amitguptagwl]

We created technical.md to help new developers to understand the project structure and it's component better. However as the new features are being added, and existing code is being refactored, we need to improve the guideline.

Watch for changes, or Bookmark for easy discovery. Fund this project for new features and maintenance. [Showcase] your project with us by raising an issue

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[Guzzler]

Hey I would like to claim this. What would be your recommendation on in what areas you would like to improve this document?

[KushalBhanot]

Hey! I would like to work on this. Can you please guide me?

[amitguptagwl]

Thanks to show the interest. Go through the code and understand it. Then check the documentation if it is suitable for any new contributor. If not then we'll have add necessary documentation and diagrams

[sims-keshri]

@KushalBhanot are you still working on this?

[amitguptagwl]

This is open to pick by anyone