Migrate 'zwe init' actions to templated JCL

[1000TurquoisePogs]

This PR solves a common complaint; Admins need more system changes represented in JCL so it works with their automation, they can understand what Zowe is doing, and can view the success or failure more easily.

It solves this by taking the system actions out of each "zwe init" command, and placing them into a related JCL.
Each new and existing JCL is also simplified by removing as many "SET" commands as possible to instead replace with {templates} that reference values found in zowe.yaml

There is a new job called ZWEGENER which when run will take each JCL template, resolve it with verified zowe.yaml content, and place the result into the customer jcl lib.

ZWEGENER needs input about where your zowe.yaml and schema is, as well as the loadlib in order to find the logic that makes it be able to read zowe.yaml, configmgr-rexx.

ZWEGENER can be run by itself to provide a reduced reliance on USS to setup zowe, but there is also a new command "zwe init generate" which will call it too. This now gets automatically called in "zwe init" as a prereq for other "zwe init" subcommands.

Resolves #1038
Resolves #2481
Resolves #2482
Resolves #2487
Resolves #2451
Resolves #3065
Resolves #3634
Resolves #3562
Resolves #3416
Resolves #3641
Resolves #2470
Resolves #3330

[MarkAckert]

We've decided to postpone this PR until 3.1

[Martin-Zeithaml]

It seems the VSAM option for caching service will be depracated. We can remove entire zwe init vsam.

[github-actions]

build 5911 FAILED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/10701197599

[achmelo]

It seems the VSAM option for caching service will be depracated. We can remove entire zwe init vsam.

it is going to be deprecated but still a supported option in v3. It will be removed in v4

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build 5985 FAILED.
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build 6258 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/11251562909

[github-actions]

Test workflow 5575 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.18.1-PR-3718/zowe-2.18.1-pr-3718-6258-20241009094756.pax
Running on machine: zzow06
Result: SUCCESS
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/11252511547