Commands that need handler improvement:

• refactor oras cp to use handlers for command output #1548
• refactor oras push to use handlers for command output #1549
• refactor oras resolve to use handlers for command output #1550
• refactor oras manifest delete to use handlers for command output #1551
• refactor oras blob delete to use handlers for command output #1552
• refactor oras blob push to use handlers for command output