Adds traceMode evaluator setting to support trace() pretty printing (#1100)

pkl-server/src/test/kotlin/org/pkl/server/AbstractServerTest.kt

@@ -78,6 +78,7 @@ abstract class AbstractServerTest {
       project = null,
       externalModuleReaders = null,
       externalResourceReaders = null,
+      traceMode = null,
     )
 
   @Test
@@ -1025,6 +1026,7 @@ abstract class AbstractServerTest {
         http,
         null,
         null,
+        null,
       )
 
     send(message)

pkl-server/src/test/kotlin/org/pkl/server/BinaryEvaluatorSnippetTests.kt

@@ -56,6 +56,7 @@ class BinaryEvaluatorSnippetTestEngine : InputOutputTestEngine() {
       null,
       null,
       null,
+      null,
     )
 
   private fun String.stripFilePaths() =

pkl-server/src/test/kotlin/org/pkl/server/BinaryEvaluatorTest.kt

@@ -45,6 +45,7 @@ class BinaryEvaluatorTest {
       null,
       null,
       null,
+      null,
     )
 
   private fun evaluate(text: String, expression: String?) =

pkl-server/src/test/kotlin/org/pkl/server/ServerMessagePackCodecTest.kt

@@ -23,6 +23,7 @@ import java.time.Duration
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 import org.msgpack.core.MessagePack
+import org.pkl.core.evaluatorSettings.TraceMode
 import org.pkl.core.messaging.Message
 import org.pkl.core.messaging.MessageDecoder
 import org.pkl.core.messaging.MessageEncoder
@@ -100,6 +101,7 @@ class ServerMessagePackCodecTest {
           ),
         externalModuleReaders = mapOf("external" to externalReader, "external2" to externalReader),
         externalResourceReaders = mapOf("external" to externalReader),
+        traceMode = TraceMode.PRETTY,
       )
     )
   }