feat: add container support for remote-repo-url UNIFY-506

[adrobuta]

Pull Request Submission Checklist

• Follows CONTRIBUTING guidelines
• Includes detailed description of changes
• Contains risk assessment (Low | Medium | High)
• Highlights breaking API changes (if applicable)
• Links to automated tests covering new functionality
• Includes manual testing instructions (if necessary)
• Updates relevant GitBook documentation (PR link: ___)
• Includes product update to be announced in the next stable release notes

What does this PR do?

Adds support for remote-repo-url option for ContainerTarget.
Remote-repo-url allows the user to override the remote URL for the image that is monitored/tested.

Monitoring container images using remote-repo-url groups container images under the same target with other monitored projects.

Where should the reviewer start?

How should this be manually tested?

snyk container monitor debian:latest --remote-repo-url=https://github.com/org/my-repo-test

What's the product update that needs to be communicated to CLI users?

[github-actions]

	Warnings
⚠️	Please make changes to snyk help text in Gitbook. Changes will be automatically synchronised to Snyk CLI as a scheduled PR. For more information, see: help/README.md.
⚠️	Since the CLI is unifying on a standard and improved tooling, we're starting to migrate old-style imports and exports to ES6 ones. A file you've modified is using either module.exports or require(). If you can, please update them to ES6 import syntax and export syntax. Files found: src/cli/commands/monitor/index.ts

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