Adds more descriptive and helpful error messages to the FT contracts and txs

[joshuahannan]

Closes: #169

Based on guidelines in onflow/docs#795

Description

• Updates all error messages to include more information and relevant data about the error if possible
• Updates CLI commands for C1.0

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For contributor use:

• Targeted PR against master branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Re-reviewed Files changed in the Github PR explorer

[sisyphusSmiling]

Very nice error messages. Couple minor comments and formatting suggestions.

[nvdtf]

Thanks for the updates! I left minor edits about punctuations and spacing

[joshuahannan]

Thank you for all the great comments! I addressed all of them

[ksvnar]

Спасибо вам очень хорошо