Re-introduce some logging after backout

Summary:
Since D80715432 landed, we also landed D81256207 to add more logging.  To prevent conflicts, we backout in 3 steps:

* In diff 1/3, we backout D81256207, which added more logging
* In diff 2/3, we backout D80715432, which is the problematic diff we're trying to revert
* In diff 3/3, we introduce some of the logging we backed out in diff 1/3

Differential Revision: D82581441

Author: metascroy

backends/apple/coreml/runtime/delegate/ETCoreMLModelManager.mm

@@ -436,11 +436,13 @@ - (nullable NSURL *)compiledModelURLWithIdentifier:(NSString *)identifier
     switch (modelAssetType.value()) {
         case ModelAssetType::CompiledModel: {
             // Model is already compiled.
+            ETCoreMLLogInfo("The model in the pte file is pre-compiled.  Skipping compilation.");
             return modelURL;
         }
 
         case ModelAssetType::Model: {
             // Compile the model.
+            ETCoreMLLogInfo("The model in the pte file is not pre-compiled.  Compiling with a 5 min timeout.");
             NSURL *compiledModelURL = [ETCoreMLModelCompiler compileModelAtURL:modelURL
                                                           maxWaitTimeInSeconds:(5 * 60)
                                                                          error:error];

backends/apple/coreml/runtime/delegate/backend_delegate.mm

@@ -80,6 +80,12 @@ MLComputeUnits get_compute_units(const Buffer& buffer) {
     }
 
     NSURL *database_url = [database_directory_url URLByAppendingPathComponent:database_name];
+
+
+    ETCoreMLLogInfo("Creating ETCoreMLAssetManager with the following paths:");
+    ETCoreMLLogInfo("databaseURL: %@", database_url);
+    ETCoreMLLogInfo("assetsDirectoryURL: %@", assets_directory_url);
+    ETCoreMLLogInfo("trashDirectoryURL: %@", trash_directory_url);
     ETCoreMLAssetManager *manager = [[ETCoreMLAssetManager alloc] initWithDatabaseURL:database_url
                                                                    assetsDirectoryURL:assets_directory_url
                                                                     trashDirectoryURL:trash_directory_url