[foreign-memaccess+abi] Withdrawn: Change classes into records and fix finality

[Per Minborg]

On Mon, 19 Sep 2022 12:33:23 GMT, Per Minborg <duke at openjdk.org> wrote:

> This PR converts some of the regular classes into records. It also fixes some finality issues.
> 
> Note: Some methods with a very long method parameter list have their parameter list broken up into separate lines.

This pull request has been closed without being integrated.

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PR: https://git.openjdk.org/panama-foreign/pull/725