Investigate best way to convert Redis Total Counts to Internal Events

Problem

As explained in &11433 (closed) we want to migrate all existing Redis all-time total count metrics to our new internal events setup. However, at this moment we're not sure how to best tackle the migration. The spectrum of our options goes from:

1. Manually tackle one metric at a time
2. Create a codemod script that converts all metrics at once.

There is also a possibility of an in-between solution, e.g. just convert some events automatically or just use a script to verify the migration.

Desired Outcome

We decided on the best way to migrate the Redis total counts. The placeholder issue for doing the migration #424893 (closed) is filled out accordingly and potentially other needed issues are created.

Possible Solution

Classify different ways total counts are implemented, and e.g. use an automated script to figure out what the most common ways of implementation are to give a recommendation on migration.