Add helper methods for creating action logs

[iamlogand]

It should be possible to create an action log with only create_action_log("personal_revenue", None, None), where the arguments are:

1. Type
2. Faction
3. Data

This function can assume that the index of the action log is the index of the last action log + 1, and the step is the latest step.

There should also be a higher-level version called create_action_log_and_message, similar to the existing helper called create_step_and_message.