Add validation before signing for transaction - Closes #532

[shuse2]

What was the problem?

When signing the transaction, user was able to sign invalid transaction.
However, invalid transaction should not be tried to sign.

How did I fix it?

How to test it?

./bin/run transaction:sign '{ type: 0 }'

Review checklist

• The PR resolves Add validate transaction on signTransaction #532
• All new code is covered with unit tests
• All new code was formatted with Prettier
• Linting passes
• Tests pass
• Commit messages follow the commit guidelines
• Documentation has been added/updated