Added more logs and optional ignore-ssl

[Malo87]

Overview

• Add defensive HTTP handling and optional SSL verification bypass to avoid JSON parsing errors on non-200 responses and to support testing against self-signed certificates or proxies.

• Expose a --ignore-ssl CLI flag and document it in README.md.

Key changes

Validate HTTP response status codes before attempting json parsing and return gracefully on errors.
Wrap response.json() parsing in try/except to handle empty/invalid JSON.
Log snyk-request-id and response.text for non-200 responses to aid debugging.

Make TLS verification configurable via the CLI flag --ignore-ssl and pass the resulting verify value into verify_org_integrations, get_all_targets, and migrate_targets.
Improve error output in migrate_targets (safe header access and include response body).
Document the new --ignore-ssl flag and its security warning in README.md.

Notes
On non-200 responses the tool now prints debug info and returns safely instead of raising JSONDecodeError.
Default behavior remains secure (TLS verification enabled). --ignore-ssl must be explicitly passed to disable verification.
Pagination logic and existing functionality preserved.

--ignore-ssl is insecure; the README includes a clear warning. Default remains verify=True.