Use git submodules

Author: meruune

.github/workflows/build.yml

@@ -9,20 +9,10 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2.1.0
         id: checkout_code
-
-      - name: Setup Chocolatey
-        run: |
-          Set-ExecutionPolicy Bypass -Scope Process -Force
-          [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072
-          Invoke-Expression ((New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))
-
-          choco install -y sed
-          Import-Module "$env:ProgramData\Chocolatey\helpers\chocolateyProfile.psm1"
-          Update-SessionEnvironment
-
+        
       - name: Setup Eigen
         run: |
-          git clone https://gitlab.com/libeigen/eigen "${env:GITHUB_WORKSPACE}/external/eigen"
+          git submodule update --init
 
       - name: Build Samples
         run: |

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "external/eigen"]
+	path = external/eigen
+	url = https://gitlab.com/libeigen/eigen

BUILD_AND_DEPLOY.md

@@ -8,14 +8,9 @@ Follow these steps:
 - [Install tools for the Windows App development](https://docs.microsoft.com/en-us/windows/apps/windows-app-sdk/set-up-your-development-environment?tabs=vs-2022-17-1-a%2Cvs-2022-17-1-b).<br>
   You'll have to install Visual Studio 2022 or its Build Tools.
 
-- Clone `Eigen3` to `external/`<br>
+- Set up external dependencies
   ```powershell
-  > git clone https://gitlab.com/libeigen/eigen ./external/eigen
-  # Reset Eigen to the latest OK state
-  > cd ./external/eigen
-  > git reset --hard 1fd5ce1002a6f30e1169b529b291216a18be2f7e
-  # Go back
-  > cd ../..
+  git submodule update --init
   ```
 
 - Build Samples:<br>

README.md

@@ -22,7 +22,9 @@ Each project in the solution is an example of a different possible implementatio
 of a tracking device (Later referred to as `K2TrackingDevice`), and an additional one with settings.<br>
 
 <ins>[You can find a detailed description about every single plugin and device type here.](https://github.com/KinectToVR/K2TrackingDevice-Samples/blob/main/DEVICES.md)</ins><br>
-[As for a real-world example, please check out this. (JointsBasis w/ custom settings)](https://github.com/KimihikoAkayasaki/device_owoTrackVR)
+[As for a real-world example, please check out this. (JointsBasis w/ custom settings)](https://github.com/KimihikoAkayasaki/device_owoTrackVR)  
+
+BTW: If you prefer C# to C++ for your device/plugin, please check out [this branch](https://github.com/KinectToVR/K2TrackingDevice-Samples/tree/managed).
 
 Briefly, currently supported device types are:
 - Tracking providers: