Add RoboSharp.dll with Git LFS

- The DLL required to get the Github Action build to work
- `release-build.yml`: configure LFS for Github Action
- Commands to use Git LFS, executed in PowerShell:

  ```ps
  git lfs install
  git lfs track "*.dll"
  git add -u -f .\Binaries\RoboSharp.dll .gitattributes
  ```

.gitattributes

@@ -0,0 +1,2 @@
+*.dll filter=lfs diff=lfs merge=lfs -text
+*.pdb filter=lfs diff=lfs merge=lfs -text

.github/workflows/release-build.yml

@@ -28,6 +28,7 @@ jobs:
         uses: actions/[email protected]
         with:
             fetch-depth: 0
+            lfs: 'true'
 
       - name: setup-msbuild
         uses: microsoft/setup-msbuild@v2

ATxService/ATxService.csproj

@@ -55,8 +55,9 @@
       <HintPath>..\packages\NLog.4.3.11\lib\net45\NLog.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="RoboSharp">
-      <HintPath>..\..\robosharp\RoboSharp\bin\Release\RoboSharp.dll</HintPath>
+    <Reference Include="RoboSharp, Version=1.1.2.11, Culture=neutral, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\Binaries\RoboSharp.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Configuration" />