feat(JFrogCliV2): allow persisting and reusing JFrog CLI config across steps

[SierraNL]

Reasons

I created this PR as an implementation of my feature request #636

It is a combination of a few features, if you prefer seperate PR's I can split it up.

But together they give the option of doing a big migration to JFrog a lot easier, by just adding the task in the front of the pipeline, and in the end to gather and push the buildinfo and keep the rest of the pipeline in place.

Summary

• Adds opt-in inputs to JFrogCliV2 so downstream pipeline steps (e.g. dotnet restore) can reuse the CLI config this task creates, instead of every step needing its own JFrog Platform service connection.
• registerInPath (default false) — adds jf's directory to the agent's PATH for later steps.
• keepConfig (default false) — skips the cleanup step so the config survives after this task finishes.
• configurationName (optional) — reuse an existing named config instead of creating a new one; jfrogPlatformConnection becomes optional when this is set (the task fails clearly if neither is provided).
• enablePackageAlias / packageAliasTools (default false) — installs JFrog CLI's package-alias ("Ghost Frog") shims (requires CLI ≥ 2.93.0; warns and skips on older versions) so native build tool calls route through jf for the rest of the job.
• The resolved config name is exposed via the JFROG_CLI_CONFIG_NAME pipeline variable, intended for a paired "teardown" task at the end of the pipeline (configurationName=$(JFROG_CLI_CONFIG_NAME), keepConfig=false) to delete the persisted config.
• Added minSupportedPackageAliasCliVersion (2.93.0) constant to jfrog-tasks-utils/utils.js, following the existing minSupported*CliVersion pattern.

All new behavior is off by default, so existing pipelines using JFrogCliV2 are unaffected.

Test plan

• node --check on tasks/JFrogCliV2/jfrogCliRun.js and jfrog-tasks-utils/utils.js
• Validated tasks/JFrogCliV2/task.json parses as valid JSON
• Formatted all changed files with the project's Prettier config (.prettierrc)
• Manual pipeline verification:
  • Default run (all new inputs at default) behaves identically to before
  • Setup/teardown pair: setup with configurationName empty, keepConfig=true, registerInPath=true; teardown with configurationName=$(JFROG_CLI_CONFIG_NAME), keepConfig=false
  • enablePackageAlias=true on a CLI version below 2.93.0 logs a warning and the task still succeeds

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[SierraNL]

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