#92 Change IConfigCatClient.Snapshot() to return IConfigCatClientSnapshot

[brian-knoll-micronetonline]

Describe the purpose of your pull request

change the return type for IConfigCatClient.Snapshot() from ConfigCatClientSnapshot to IConfigCatClientSnapshot

Related issues (only if applicable)

92 Change IConfigCatClient.Snapshot() to return IConfigCatClientSnapshot

Requirement checklist (only if applicable)

• [X] I have covered the applied changes with automated tests.
• [X] I have executed the full automated test set against my changes.
• [ ] I have validated my changes against all supported platform versions.
• [X] I have read and accepted the contribution agreement.