This commit decouples knownGaps and Indexer. All knownGaps logic is in its own file. This makes testing and maintainability easier.
We have also removed all efforts to check the `lastProcessedblock` - This is because we won't ever run into this issue (hyptothetically), because geth won't let it happen.
This commit contains many new features:
1. Write the insert statement to file if there is an error when trying to write to DB.
2. Test the write to DB and write to file features in unit tests. They work as expected.
3. Insert logic for calling the knownGaps function (untested).
This PR makes a major change to the way statediff is started. Unless it is started in `file` mode, it will create a `file` indexer. This indexer will be used for writing errors to disk.
This contains all the logic needed to add a gap to the `known_gaps` table.
We can now add this code to various parts of the application to calculate if a gap has occured.
This commit contains all the code needed to update the `known_gaps` table. It uses a generic function `PushKnownGaps` to insert gaps to the database.
The current test is very "basic." All it does it insert a dummy gap into the database. As long as their is no error it will return succesfully.
I have also removed the foundry subfolder. I am using the `related-repository` setup for testing.
