[Incentivized] Add `Display` implementations for `iota-sdk-types`

[DaughterOfMars]

Summary

Almost all types in the iota-sdk-types crate should have a Display implementation, so that they can be properly printed.

Estimated complexity

Medium

Estimated duration

3 days

Details & acceptance criteria

• The output strings should be readable and clear when printed to the console
• Tables should be used (ex. with tabled) to display structs with multiple fields (with some exceptions where the struct can be represented via a canonical string, like StructTag)
• Outputs should be consistent across all types
• Update existing types' impls if necessary to conform
• Omit fields that should not be readable for security reasons, such as private keys

Pull request required?

Yes