feat: add repomap support for Scala

Resolves #3578

tests/fixtures/languages/scala/test.scala

@@ -0,0 +1,61 @@
+package com.example.test
+
+// A trait definition
+trait Greeter {
+  def greet(name: String): String
+}
+
+// A class definition with parameters
+class FormalGreeter(prefix: String) extends Greeter {
+  // A method definition
+  override def greet(name: String): String = {
+    s"$prefix, $name!"
+  }
+  
+  // A val definition
+  val defaultPrefix: String = "Hello"
+  
+  // A var definition
+  var counter: Int = 0
+}
+
+// An object definition
+object GreeterFactory {
+  // A function definition
+  def createGreeter(formal: Boolean): Greeter = {
+    if (formal) {
+      new FormalGreeter("Good day")
+    } else {
+      new CasualGreeter
+    }
+  }
+  
+  // A type definition
+  type GreeterType = Greeter
+}
+
+// An enum definition
+enum Greeting {
+  // Simple enum cases
+  case Hello, Hi, Hey
+  
+  // Full enum case with parameters
+  case Custom(text: String)
+}
+
+// A class that uses generics
+class Container[T](val value: T) {
+  def map[U](f: T => U): Container[U] = new Container(f(value))
+}
+
+// A case class
+case class Person(name: String, age: Int) {
+  def introduce(): String = {
+    val greeter = GreeterFactory.createGreeter(age > 30)
+    greeter.greet(name) + s" I am $age years old."
+  }
+}
+
+class CasualGreeter extends Greeter {
+  override def greet(name: String): String = s"Hey, $name!"
+}