Update FT Error messages to be more descriptive

[joshuahannan]

Works towards onflow/docs#795

Issue To Be Solved

Error messages for panics in transactions and contracts are not very helpful to end-users.
They should be updated to be more descriptive

Suggest A Solution

Go through all the standard contracts, transactions, and scripts to update them with 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 if relevant