Add a wiki page to go over some of the C++ concepts and features being used in druid project.

**Is your feature request related to a problem? Please describe.**
One of druid's goals is to provide an opportunity for new contributors to learn C++. This means some contributors may not understand the how/why certain C++ features in druid are being used.

**Describe the solution you'd like**
Document and reference cpp knowledge being used in druid. Be sure to include:

- [ ] CppCoreGuidelines
- [ ] Memory Alignment
- [ ] Rule-of-five
- [ ] Move semantics
- [ ] Passing containers by value
- [ ] and more....

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context**
Add any other context or screenshots about the feature request here.