Initial Setup of Navigation and Content of Part 1 of the series (#39)

* Start drafting documentation

* Fix spelling errors

* Better wording in explaining what happens in the HelloWindow chapter

* Wrap lines at around 100 characters

* Fix explanation of GLFW_NO_API

* Fix code snippet issues

* Add HelloWindowApplication

* Remove old placeholders

* Initial setup of navigation and content files for part1 of the series

* Fix root index and enable navigation sections

* Removed Dx API page and type out initial overview

* remove example test

Co-authored-by: Floyd Huizinga <floyd@engine-software.nl>

Author: deccer

docs/1-getting-started/coordinate-systems.md

@@ -0,0 +1,17 @@
+# Overview
+
+As many may know or not know, there's a few choices in terms of what to use for graphics, such as OpenGL, Vulkan, Metal and what is commonly known as "DirectX".
+However in word of mouth DirectX usually refers to Direct3D, which is one of the many API's that DirectX has, as it is less known that DirectX is more than just graphics, it is:
+
+ - **Audio**,
+ - **Fonts**,
+ - **Input**,
+ - **Graphics**,
+ 
+And _other things_ more or less targeted at stuff one needs for game development.
+
+The goal of LearnD3D11 is as one might guess is the targeted explanation and showcase of Direct3D11 or as one generally refers to it: "DirectX 11" 
+
+During each step we'll provide a project for you to follow along as we explain each individual thing needed to get some graphics on your own screen.
+
+This initial section will cover creating the actual window, initializing Direct3D11 and getting our very first visuals (which is commonly known as the Hello Triangle)