Move WTO code from metal.c to zos.c + add shim

[DivergentEuropeans]

Proposed changes

The WTO code should be moved from metal.c to zos.c because it works in both LE C & Metal C, and can therefore be used by components like the Launcher to print to the syslog critical Zowe messages

This PR depends upon the following PRs: zowe/launcher#93
zowe/zowe-install-packaging#3553

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Change in a documentation
• Refactor the code
• Chore, repository cleanup, updates the dependencies.
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

PR Checklist

Please delete options that are not relevant.

• If the changes in this PR are meant for the next release / mainline, this PR targets the "staging" branch.
• My code follows the style guidelines of this project (see: Contributing guideline)
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• New and existing unit tests pass locally with my changes
• video or image is included if visual changes are made
• Relevant update to CHANGELOG.md
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works, or describe a test method below

Testing

Further comments

[DivergentEuropeans]

Have not tried removing it from metal.c completely yet, pending discussion

[1000TurquoisePogs]

You should define these functions in the zos.h file
But also, they need different names. zis uses both zos.c and metalio.c so same name will give conflict.

For now, wtoPrintf2 and message2 are fine, and we can adjust it after discussion later.

[DivergentEuropeans]

wtoPrintf2 is already defined so using wtoPrintfMetal as a placeholder for now

Corrected

[1000TurquoisePogs]

now lgtm