require custom jsoniter json type to be provided

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[Copilot]

Pull request overview

This PR requires users to provide a custom JSON type reference when using the Jsoniter codec, addressing a limitation where Jsoniter doesn't provide a built-in type for raw JSON values. The change makes the JSON type configuration explicit and mandatory for Jsoniter users.

• Modified the JsonCodec.Jsoniter enum case to require a jsonTypeRef parameter
• Added CLI validation to enforce the -jsoniter-json-type parameter when using Jsoniter
• Removed auto-generated codec logic in favor of requiring user-provided custom JSON types

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
modules/core/shared/src/main/scala/codegen.scala	Modified JsonCodec.Jsoniter to accept a jsonTypeRef parameter, removed common codec generation logic, and updated code generation to use the custom JSON type reference
modules/cli/src/main/scala/cli.scala	Updated argument parsing to require -jsoniter-json-type when using Jsoniter codec, modified argument processing to preserve case sensitivity for values
modules/example-jsoniter-json/shared/src/main/scala/json.scala	Added example implementation of a custom Jsoniter JSON type using an opaque type wrapper around Array[Byte]
build.sbt	Added new exampleJsoniterJson project, updated jsoniter-scala version to 2.38.8, and configured test projects to depend on the example JSON implementation when using Jsoniter
README.md	Updated documentation with example of custom Jsoniter JSON type, added new -jsoniter-json-type configuration parameter, and updated dependency versions
test_gen.sh	Added -jsoniter-json-type parameter to test generation script and changed array type to ziochunk
example/generate.scala	Updated Scala version to 3.7.4, updated codegen dependency version to 0.0.12, and switched JSON codec from Jsoniter to ZioJson

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