JFROG_CLI_REQUEST_TIMEOUT variable with the request timeout

[dex4er]

• [ ] All tests passed. If this feature is not already covered by the tests, I added new tests.
• [ ] All static analysis checks passed.
• [x] This pull request is on the dev branch.
• [x] I used gofmt for formatting the code before submitting the pull request.

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It adds additional parameter to set the timeout for service manager that is 0 by default.

[github-actions[bot]]

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[dex4er]

I have read the CLA Document and I hereby sign the CLA

[github-actions[bot]]

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[RemiBou]

@dex4er please open a feature request before this kind of changes