RFR: 8311877: [macos] Add CLI options to provide signing identity directly to codesign and productbuild

[Alexander Matveev]

- Added `--mac-app-image-sign-identity` and `--mac-installer-sign-identity` CLI options to jpackage to provide signing identity directly to `codesign` and `productbuild` tools as per CSR [JDK-8316631](https://bugs.openjdk.org/browse/JDK-8316631).
- If `codesign` or `productbuild` fails, then output of these tools will be printed to stdout to help user diagnose issues with signing using new options. Examples with sign identity set to "test" which does not exist on system:
> Error: "codesign" failed with following output:
> test: no identity found

> Error: "productbuild" failed with following output:
> productbuild: error: Cannot write product to "/Users/SOMEDIR/Test-1.0.pkg". (Could not find appropriate signing identity for “test”.)
- Added error handling not to allow invalid combinations of signing options.
- Updated signing tests to test new changes.

-------------

Commit messages:
 - 8311877: [macos] Add CLI options to provide signing identity directly to codesign and productbuild

Changes: https://git.openjdk.org/jdk/pull/16085/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16085&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8311877
  Stats: 550 lines in 24 files changed: 463 ins; 23 del; 64 mod
  Patch: https://git.openjdk.org/jdk/pull/16085.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16085/head:pull/16085

PR: https://git.openjdk.org/jdk/pull/16085