Guide and Blog Post for better Error messages

[joshuahannan]

Issue to be solved

Error messages for panics in transactions and contracts are not very helpful to end-users.
We need a guide in the docs site to show projects how to write better error messages.

Suggest A Solution

Write a guide for standard contracts, transactions, and scripts to show how to write good error messages. Error messages could contain:

• Contract name and function name if coming from a contract
• Description of literal error
• Description of what high-level reason might be causing the error
• Suggestion for fixing it

Write a blog post about it

Write an announcement for discord, forum, twitter, etc