draft holddata workflow

[MarkAckert]

This PR is an attempt to detect changes which may require HOLDDATA and flag them via a failing build if there is no matching HOLDDATA updates in the repository's SMP/e service directory.

There's no way we can detect every change which requires HOLDDATA, so ultimately the developers working on features must be responsible for updating HOLDDATA docs. To that end, a small blurb was added to the repo's README which points users to the SMP/e service directory for further instruction.

Tests in another PR showed the workflow works as intended, capturing changes to the SZWE* files and failing when HOLDDATA is absent.

Addresses #3854
Addresses #1576

[github-actions]

build 6753 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12818127866

[github-actions]

build 6754 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12818145938

[github-actions]

Test workflow 5950 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/3.1.0-PR-4138/zowe-3.1.0-pr-4138-6753-20250116214704.pax
Running on machine: zzow11
Result: FAILURE
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12818190866

[github-actions]

Test workflow 5951 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/3.1.0-PR-4138/zowe-3.1.0-pr-4138-6754-20250116214855.pax
Running on machine: zzow10
Result: FAILURE
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12818214370

[github-actions]

build 6761 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12831967682

[github-actions]

Test workflow 5956 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/3.1.0-PR-4138/zowe-3.1.0-pr-4138-6761-20250117153007.pax
Running on machine: zzow09
Result: FAILURE
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12832052533

[github-actions]

build 6767 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12834807151

[github-actions]

Test workflow 5959 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/3.1.0-PR-4138/zowe-3.1.0-pr-4138-6767-20250117183819.pax
Running on machine: zzow10
Result: FAILURE
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12834913236

[github-actions]

build 6774 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12835721242

[github-actions]

Test workflow 5960 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/3.1.0-PR-4138/zowe-3.1.0-pr-4138-6774-20250117194330.pax
Running on machine: zzow09
Result: FAILURE
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12835780568

[github-actions]

build 6776 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12836531152

[github-actions]

Test workflow 5962 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/3.1.0-PR-4138/zowe-3.1.0-pr-4138-6776-20250117204736.pax
Running on machine: zzow09
Result: FAILURE
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/12836622349