Support authentication with direct connection config environment variables

[sverdlov93]

• [ ] All tests passed. If this feature is not already covered by the tests, I added new tests.
• [ ] I used npm run format for formatting the code before submitting the pull request.

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Setting direct connection details environment variables

You can use connection details directly by settings one of the following environment variables combinations:

1. JF_URL (anonymous)
2. JF_URL + JF_USER + JF_PASSWORD (basic auth)
3. JF_URL + JF_ACCESS_TOKEN (access token)

You can use them in the workflow as follows:

- uses: jfrog/setup-jfrog-cli@v2
  env:
    JF_URL: ${{ secrets.JF_URL }}
    JF_USER: ${{ secrets.JF_USER }}
    JF_PASSWORD: ${{ secrets.JF_PASSWORD }}
    # Access token if JF_USER and JF_PASSWORD are not provided
    # JF_ACCESS_TOKEN: ${{ secrets.JF_ACCESS_TOKEN }}
- run: |
    jf rt ping
    
    # If both local config(JF_ENV_*) and direct connection details(JF_URL) are provided, the default config will be the local config.
    # To make the direct connection details config as the default config use the following command:
    jf c use setup-jfrog-cil-server