feat: add JsonPatch structure and unit tests

Author: akshayabogoju-coder

zio-schema-json/shared/src/main/scala/zio/schema/json/JsonPatch.scala

@@ -0,0 +1,16 @@
+package zio.schema.json
+
+import zio.schema.DynamicValue
+
+sealed trait JsonPatch {
+
+  def apply(target: DynamicValue): Either[String, DynamicValue] = {
+    val _ = target
+    Left("Implementation missing")
+  }
+}
+
+object JsonPatch {
+  final case class Add(path: String, value: DynamicValue) extends JsonPatch
+  final case class Remove(path: String)                   extends JsonPatch
+}

zio-schema-json/shared/src/test/scala/zio/schema/json/JsonPatchSpec.scala

@@ -0,0 +1,18 @@
+package zio.schema.json
+
+import zio.schema.DynamicValue
+import zio.test._
+import zio.test.Assertion._
+
+object JsonPatchSpec extends ZIOSpecDefault {
+  override def spec: Spec[Any, Any] = suite("JsonPatch Spec")(
+    test("Add operation should hold correct path and value") {
+      val patch = JsonPatch.Add("path", DynamicValue("value"))
+      assert(patch.path)(equalTo("path"))
+    },
+    test("Remove operation should hold correct path") {
+      val patch = JsonPatch.Remove("path")
+      assert(patch.path)(equalTo("path"))
+    }
+  )
+}