#skip-changelog

📜 Description

This PR adds the JsonSerializer which implements the ISerializer interface and acts as the drop in replacement for the GsonSerializer.

💡 Motivation and Context

This sets our new serialization approach as the default but also leaves the option to users to opt out of it.

• The new serializer is set as the default one in SentryOptions
• Fixes remaining known issues with parsing null values for set keys in payloads.
• Clients using this should be aware that there is currently no reflection support.
• Removes gson dependency.

💚 How did you test it?

• Use the new JsonSerializer in the GsonSerializer tests and rename them to JsonSerializer tests.

📝 Checklist

• I reviewed the submitted code
• I added tests to verify the changes
• I updated the docs if needed
• No breaking changes

🔮 Next steps