Add A New Slide

## We Need More Slides
Grab another octocat and create a new slide from scratch.
If you need help, check out the Appendix in the training manual.

Inspect the repository's existing slides and consult the Appendix in the training manual before starting. Add another slide from scratch using an octocat, and consider the work done when the new slide is included consistently with the existing slide material.

由索引模型根据 Issue 内容生成。