Merge pull request #1382 from ahoppen/stream-index-log

Instead of sending a message to the index log when an indexing task finishes, stream results as they come in

Sources/SKCore/CompilationDatabaseBuildSystem.swift

@@ -125,7 +125,7 @@ extension CompilationDatabaseBuildSystem: BuildSystem {
 
   public func prepare(
     targets: [ConfiguredTarget],
-    indexProcessDidProduceResult: @Sendable (IndexProcessResult) -> Void
+    logMessageToIndexLog: @Sendable (_ taskID: IndexTaskID, _ message: String) -> Void
   ) async throws {
     throw PrepareNotSupportedError()
   }