…lugin

* Added the necessary metadata to the serialization format of the dataframe for it to be rendered in the Kotlin notebooks plugin.
* Introduced the method `toJsonWithMetadata` which includes the metadata during the serialization process of the dataframe.

…entation and tests.

This commit includes a new document that explains the JSON serialization format used for rendering dataframes in the Kotlin notebooks plugin for IntelliJ IDEA. The format does not adhere to any formal schema such as Json Schema, but is intended for illustrative purposes.

This update introduces specific rendering flows based on the version of the IDE. A new method has been added to retrieve the IDE build number. This information is then used to conditionally generate a JSON-encoded DataFrame, adapting to the specific capabilities of the IDE version in use. Additionally, relevant tests have been updated to accommodate these changes.

Changed the condition check in the fromString function. Now, it accepts build numbers with three or more parts.

* Renamed encodePrimitiveData to encodeValue
* Changed return type of toJsonWithMetadata to not expose JsonObject in publec API
* Moved internal and private functions from json.kt to new writeJson.kt / readJson.kt files under impl.io package

Replaced the usage of 'rows().take().toDataFrame()' with the more concise 'take()' method in multiple files.