Add custom chart instructions for Quest (#52)

* initial work for quest instructions

* add screenshots for quest

* update screenshot

* remove sidequest placeholder for now

Author: DerpyChap

docs/files/vr/ingamequest.png

@@ -6,6 +6,7 @@
 - [Upgrading to TrombLoader 2](migrating-to-v2)
 - **Modding Trombone Champ: Unflattened**
 - [Installing Songs (SteamVR)](installing-songs-steamvr)
+- [Installing Songs (Meta Quest)](installing-songs-quest)
 - **Charting**
 - [Creating Charts](creating-charts)
 - [Charting Guidelines](charting-guidelines)

docs/files/vr/questdraganddrop.png

@@ -0,0 +1,40 @@
+# Installing Songs (Meta Quest Version)
+---
+!> **IMPORTANT:** This guide is for the VR game *Trombone Champ: Unflattened* on **Meta Quest**. For installing custom songs in the **Steam** version, check [this guide](installing-songs-steamvr).<br><br>For installing custom songs in the standard game, see the [mod installation guide for Trombone Champ](installing-r2modman).
+
+Trombone Champ: Unflattened has built-in custom song support, and is compatible with charts made for the standard game. Do note that only video and image backgrounds will work, custom backgrounds made in Unity will not.
+
+?> You can find community made custom charts on [TootTally](https://toottally.com/), or by browsing [TromboneDB](https://tc-mods.github.io/TromboneDB/).
+
+## Adding charts via USB
+
+1. Extract the ZIP files containing the charts you want to copy over. Make sure each the files of each chart (the `song.ogg`, `song.tmb`, and `bg.png`/`bg.mp4`) are stored together in their own folder.
+
+![Extracting a chart from a ZIP file](../docs/files/vr/questextract.png)
+
+2. Connect your headset to your PC using a USB cable. You should see your headset appear as removable storage.
+
+![Meta Quest 3 connected to Windows via USB](../docs/files/vr/questusbconnected.png)
+
+?> macOS users will need to use a third-party application (such as [OpenMTP](https://openmtp.ganeshrvel.com)) in order to access the storage of their Quest.
+
+3. Open up the Quest's internal storage, and then navigate to `/Android/data/com.ImpactReality.TromboneChamp/files/customtracks/`. Drag and drop the chart folders you created earlier into `customtracks`.
+
+![Drag and dropping the charts to the Quest](../docs/files/vr/questdraganddrop.png)
+
+4. Once you've finished copying over the songs you want, start up the game, head into **Free Play**, and then you'll find your custom songs listed in their own category.
+
+![Custom song shown in-game](../docs/files/vr/ingamequest.png)
+
+## Finding Songs
+
+There are a number of places you can find Trombone Champ custom songs online. Here are a few options:
+- The search function on the [TootTally website](https://toottally.com/search/).
+- [TromboneDB](https://tc-mods.github.io/TromboneDB/) has an archive of the majority of charts released, including charts that are too large for TootTally.
+- The `#custom-charts` channel in the [Trombone Champ Modding Discord](https://discord.gg/KVzKRsbetJ).
+- The Tootbender bot's chart search command in the [Trombone Champ Modding Discord](https://discord.gg/KVzKRsbetJ).
+- Most charts have showcase videos on YouTube. Sometimes they will have download links in the description.
+
+### Creating Custom Songs {docsify-ignore}
+
+> Check out the [**Charting guide**](creating-charts) for info on creating your own custom charts.

docs/files/vr/questextract.png

@@ -1,8 +1,8 @@
 # Installing Songs (Steam Version)
 ---
-!> **IMPORTANT:** This guide is for the VR game *Trombone Champ: Unflattened* on **Steam**. For installing custom songs in the standard game, see the [mod installation guide for Trombone Champ](installing-r2modman).
+!> **IMPORTANT:** This guide is for the VR game *Trombone Champ: Unflattened* on **Steam**. For installing custom songs in the **Meta Quest** version, check [this guide](installing-songs-steamvr).<br><br>For installing custom songs in the standard game, see the [mod installation guide for Trombone Champ](installing-r2modman).
 
-Trombone Champ: Unflattened has built-in custom song support, and is compatible with charts made for the base game. Do note that only video and image backgrounds will work, custom backgrounds made in Unity will not.
+Trombone Champ: Unflattened has built-in custom song support, and is compatible with charts made for the standard game. Do note that only video and image backgrounds will work, custom backgrounds made in Unity will not.
 
 ?> You can find community made custom charts on [TootTally](https://toottally.com/), or by browsing [TromboneDB](https://tc-mods.github.io/TromboneDB/).
 
@@ -13,7 +13,7 @@ Trombone Champ: Unflattened has built-in custom song support, and is compatible
 
 ![Browse local files in Steam](../docs/files/vr/copychartsteam.png)
 
-!> Each chart must be stored in its own folder. If the ZIP file you've downloaded doesn't contain a folder, you will have to make one yourself and then copy the ZIP contents (`song.tmb`, `song.ogg`, and `.bg.png`/`.bg.mp4`) to it.
+!> Each chart must be stored in its own folder. If the ZIP file you've downloaded doesn't contain a folder, you will have to make one yourself and then copy the ZIP contents (`song.tmb`, `song.ogg`, and `bg.png`/`bg.mp4`) to it.
 
 3. Once you've finished copying over the songs you want, start up the game, head into **Free Play**, and then you'll find your custom songs listed in their own category.
 

docs/files/vr/questusbconnected.png

@@ -48,6 +48,7 @@
                 '/installing-r2modman-linux': '/docs/user-guide/installation/installing-r2modman-linux.md',
                 '/migrating-to-v2': '/docs/user-guide/installation/migration.md',
                 '/installing-songs-steamvr': '/docs/user-guide/installation/installing-songs-steamvr.md',
+                '/installing-songs-quest': '/docs/user-guide/installation/installing-songs-quest.md',
                 '/creating-charts': '/docs/user-guide/charting/creating-charts.md',
                 '/charting-guidelines': '/docs/user-guide/charting/charting-guidelines.md',
                 '/chart-backgrounds': '/docs/user-guide/charting/chart-backgrounds.md',