Validate appfw plugins schema during component install

[1000TurquoisePogs]

Resolves #3863 by simply checking for appfwPlugin entries in a component manifest and then running a loop of getPluginDefinition() during the install extract step (called during both install and upgrade) but not caring about the output - it either passes or quits in error if schema is invalid.

I put this in a spot of the code where the component directory is still a temp dir - not yet resolved so that if a failure occurs then the folder can be removed.

[github-actions]

build 5443 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9514900088

[github-actions]

Test workflow 4761 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.16.0-PR-3866/zowe-2.16.0-pr-3866-5443-20240614105731.pax
Running on machine: zzow06
Result: SUCCESS
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9514987918

[github-actions]

build 5486 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9647111923

[github-actions]

Test workflow 4826 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.16.0-PR-3866/zowe-2.16.0-pr-3866-5486-20240624142926.pax
Running on machine: zzow06
Result: SUCCESS
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9647217396

[github-actions]

build 5490 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9662961092

[github-actions]

Test workflow 4832 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.16.0-PR-3866/zowe-2.16.0-pr-3866-5490-20240625130802.pax
Running on machine: zzow07
Result: SUCCESS
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9663066600