docs: port to VitePress

Things that happen in this shameless squash:
- Removed 404 page
  - It doesn't work in VitePress and making it work in VitePress needs
    some invasive hack in the theme that I'm not willing to do
  - The default is more than enough, though
- Moved consoleVersionSelect include to another directory
  - This avoids being uploaded to Crowdin for translation
- Inline all SafeB9SInstaller includes
  - Not only do parameterized includes not work, but if/else statements
    don't work at all
- The sysupdate include parameter hasn't been used since MSET9, so it
  actually works just fine without any parameters. Hooray(?)
- Move mset9-chorus to an include, that logic doesn't work in VitePress
- Removed Get Started button from homepage, it breaks translations
- Tables in get-started are now shown by default; it seems VitePress really does
  not want us to use inline script. So we cannot enable it upon
  realizing that the browser is JS capable
- Include parameters are now in frontmatter to allow translation
- Hacked in a bunch of CSS values kanged from the old theme to make it
  look not stupid
- Drop headers down one level to make table of contents work

docs/updating-b9s.md

@@ -1,25 +1,24 @@
----
-title: "Updating B9S"
----
+# Updating B9S
 
-{% include toc title="Table of Contents" %}
-
-### Required Reading
+## Required Reading
 
 This page is for existing boot9strap users to update their installation of boot9strap to the latest version.
 
-### What You Need
+## What You Need
 
 * The latest release of [SafeB9SInstaller](https://github.com/d0k3/SafeB9SInstaller/releases/download/v0.0.7/SafeB9SInstaller-20170605-122940.zip) (direct download)
 * The latest release of [boot9strap](https://github.com/SciresM/boot9strap/releases/download/1.4/boot9strap-1.4.zip) (direct download)
 * The latest release of [Luma3DS](https://github.com/LumaTeam/Luma3DS/releases/latest) (the Luma3DS `.zip` file)
 
-### Instructions
+## Instructions
 
-#### Section I - Prep Work
+### Section I - Prep Work
+
+::: info
 
 For all steps in this section, overwrite any existing files on your SD card.
-{: .notice--info}
+
+:::
 
 1. Insert your SD card into your computer
 1. Create a folder named `boot9strap` on the root of your SD card
@@ -27,17 +26,22 @@ For all steps in this section, overwrite any existing files on your SD card.
 1. Copy `SafeB9SInstaller.firm` from the SafeB9SInstaller `.zip` to the root of your SD card and rename it to `boot.firm`
 1. Reinsert your SD card into your console
 
-    ![]({{ "/images/screenshots/updateb9s-root-layout.png" | absolute_url }})
-    {: .notice--info}
+    ::: info
 
+    ![](/images/screenshots/updateb9s-root-layout.png)
 
-#### Section II - Installing boot9strap
+    :::
+
+### Section II - Installing boot9strap
 
 1. Power on your console
     + This should automatically launch SafeB9SInstaller
-{%- include_relative include/install-boot9strap-safeb9sinstaller.txt isbootfirm="true" inline="true" %}
+1. When prompted, input the key combo given on the top screen to install boot9strap
+    + If a step on the lower screen has red-colored text, and you are not prompted to input a key combo, [follow this troubleshooting guide](troubleshooting#issues-with-safeb9sinstaller)
+1. Once it is completed, force your console to power off by holding down the power button
+    + Your console will only boot to the SafeB9SInstaller screen until the next section is completed
 
-#### Section III - Update Luma3DS
+### Section III - Update Luma3DS
 
 1. Insert your SD card into your computer
 1. Copy `boot.firm` and `boot.3dsx` from the Luma3DS `.zip` to the root of your SD card, replacing the existing file
@@ -49,5 +53,8 @@ For all steps in this section, overwrite any existing files on your SD card.
 
 ___
 
-### Continue to [Finalizing Setup](finalizing-setup)
-{: .notice--primary}
+::: tip
+
+Continue to [Finalizing Setup](finalizing-setup)
+
+:::