[REQ] Component Request: RTC Logger Shield (UnexpectedMaker)

**What's the full name of the component you'd like to see in Adafruit.io WipperSnapper?**
RTC Logger Shield for UnexpectedMaker boards

**What type of component is this (i.e.: Pin, I2C)?**
Shield

**Product URL or Datasheet**
https://unexpectedmaker.com/shop.html#!/RTC-Logger-Shield/p/578640956/category=154494275

**Additional context**
Add any other context about the component request here.

Start by reviewing the RTC Logger Shield product page linked in the issue and the repository's existing component description models. No source file, test, or entry point is named, so first identify the matching model structure and its validation or fixture tests. Done means the shield is represented consistently with the repository's existing components.

Written by the indexing model from the issue text.