Provide a list of rule titles or a merged file with all rules

[svrnm]

With the growing list of rules, it becomes harder and harder to quickly check if a rule already exists, especially as a contributor who is just passing by and might not want to pull the repository. To address that I suggest that one of the following is added to the project:

• An automatically generated file that contains all the rules, such that one can search that file quickly for potential existence of the rule I want to propose
• An automatically generated list of all rule titles in the README.md or a standalone file, to have at least that level of visibility

[atoulme]

sgtm, would you like to contribute such an automation?

[svrnm]

What would be the best way for this repo to work? A script that a user has to run to generate the file as part of their PR, or a script that updates the file post PR?