Improves the error logging in [TracksContextManager persistentStoreCoordinator].

[diegoreymendez]

Improves the error logging in [TracksContextManager persistentStoreCoordinator] to try and detect possible issues with the URLs and prewarming.

This is because we're seeing failures in DO where the file cannot be created.

Testing:

1. Make these two conditions always succeed by prepending them with true ||:

Automattic-Tracks-iOS/Sources/Model/ObjC/Common/Core Data/TracksContextManager.m

Line 49 in 716bf8f

if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error]) {

and

Automattic-Tracks-iOS/Sources/Model/ObjC/Common/Core Data/TracksContextManager.m

Line 53 in 716bf8f

if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error]) {

2. Add the following line here:

error = [NSError errorWithDomain:"testing" code:1 userInfo:nil];

3. Make sure you've set the Sentry's DSN in Settings.swift (there's a tracks demo android project) so you can run the demo App.

4. Run the demo app

Make sure you see something like this in your log when it crashes:

Tracks <E>: Unresolved error Error Domain=asd Code=1 "(null)", {
}. Context info {prewarming=0, storeURL=file:///Users/kybos/Library/Developer/CoreSimulator/Devices/056C5AA2-93D7-459C-88FC-8922966C81F0/data/Containers/Data/Application/35DB0537-8EE3-47F1-9510-6F55529B3F84/Library/Application%20Support/com.automattic.TracksDemo/Tracks.sqlite}.

[bjhomer]

Looks good to me!