Frag - Add public blacklist interface

[lambdatiger]

This PR is based on PR https://github.com/acemod/ACE3/pull/10157 and requires it to be merged.

When merged this pull request will:

• Adds a public function (addClassBlacklist) to blacklist ammo classes from producing fragments, spall, or both.
• Changes the current blacklist function to be public and adds some param checks.

Feedback on the wording for the function descriptions is most welcome (and the code itself)!

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