Add environments list API (AST-129883)

[cx-ronit-steinberg]

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Description

Add an API that allows searching for environments.
This will be used by the new DAST results panel in the extension for displaying DAST results.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Related Issues

https://checkmarx.atlassian.net/browse/AST-129883

Checklist

• I have performed a self-review of my code
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in downstream modules
• I have updated the CLI help for new/changed functionality in this PR (if applicable)
• All active GitHub checks for tests, formatting, and security are passing
• The correct base branch is being used

Screenshots (if applicable)

Add screenshots to help explain your changes.

Additional Notes

Add any other relevant information.

[github-actions]

Checkmarx One – Scan Summary & Details – b6a53624-9477-425c-b6c5-ef1a6c01cafe

Great job! No new security vulnerabilities introduced in this pull request