Feature: Allow ActiveRecordConsumers to skip creating records from messages based on some logic

[csingh]

Pull Request Template

Description

Addresses #100, allowing consumers to skip processing of messages based on some arbitrary logic.

Type of change

• [x] New feature (non-breaking change which adds functionality)
• [x] This change requires a documentation update

How Has This Been Tested?

• [x] Tested regression by ensuring consumers process all messages by default
• [x] Tested feature by implementing skip message logic
• [x] Rspec coverage

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules

[dorner]

Moiged! Thanks!