feature: Add `afterRead` hook (#2348)

[cainrus]

Implementation for https://github.com/AssemblyScript/assemblyscript/issues/2348

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[MaxGraey]

Also add definitions to Transform class. And will be great to add "afterRead" to all tests in this folder: https://github.com/AssemblyScript/assemblyscript/tree/main/tests/transform

[cainrus]

Also add definitions to Transform class. And will be great to add "afterRead" to all tests in this folder: main/tests/transform

done!

[github-actions[bot]]

This PR has been automatically marked as stale because it has not had recent activity. It will be closed in one week if no further activity occurs. Thank you for your contributions!

[github-actions[bot]]

This PR has been automatically closed due to lack of recent activity, but feel free to reopen it as long as you merge in the main branch afterwards.