`core` rules

Whenever a new protocol message is added to the protocol/ directory, check the following:

It's type is defined correctly
If it is a message from webview to core or vice versa:
- It has been added to core/protocol/passThrough.ts
- It has been added to extensions/intellij/src/main/kotlin/com/github/continuedev/continueintellijextension/constants/MessageTypes.kt
It is implemented in either core/core.ts (for messages to the core), in a useWebviewListener (for messages to the gui), or in VsCodeMessenger.ts for VS Code or IdeProtocolClient.kt for JetBriains (for messages to the IDE).
It does not duplicate functionality from another message type that already exists.

core rules