Action based rate limiting.

[russ]

Purpose

Adds a way to set per action rate limits. Fixes #1865

Description

Include the module and write a rate_limit method to define the limit. The rate_limit_key method can be overridden if you want differeny key logic.

Checklist

• [X] - An issue already exists detailing the issue/or feature request that this PR fixes
• [X] - All specs are formatted with crystal tool format spec src
• [ ] - Inline documentation has been added and/or updated
• [X] - Lucky builds on docker with ./script/setup
• [X] - All builds and specs pass on docker with ./script/test