chore: create private snk keys

[skip ci]

Author: doghappy

.gitignore

@@ -337,4 +337,5 @@ ASALocalRun/
 .localhistory/
 
 # BeatPulse healthcheck temp database
-healthchecksdb
+healthchecksdb
+*.snk

src/SocketIOClient.Windows7/SocketIOClient.Windows7.csproj

@@ -10,6 +10,8 @@
     <RepositoryUrl>https://github.com/doghappy/socket.io-client-csharp</RepositoryUrl>
     <RepositoryType>github</RepositoryType>
     <PackageTags>socket.io-client</PackageTags>
+    <SignAssembly>true</SignAssembly>
+    <AssemblyOriginatorKeyFile>SocketIOClient.Windows7.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
 
   <ItemGroup>

src/SocketIOClient/SocketIOClient.csproj

@@ -16,7 +16,8 @@
     <Version>2.2.4</Version>
     <PackageReleaseNotes></PackageReleaseNotes>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
-    <SignAssembly>false</SignAssembly>
+    <SignAssembly>true</SignAssembly>
+    <AssemblyOriginatorKeyFile>SocketIOClient.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">