Add buttons to copy content and code to transaction details

[kevin-btc]

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List

• Add Button to copy content or smart contract code in clipboard (issue #438)
• No dependency required

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• Create a transaction with content and a smart contract code.
• After submitting the transaction, you need to go to the transaction details.
• In the transaction details, click on Data > Code in the left menu.
• Click the "copy" button in the smart contract code field and paste it somewhere.
• Do the same thing for Data > content

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules