chore: deprecate standalone SecureStoreManager utility

Move SecureStoreManager project and tests to Deprecated folder and remove
from solution. SecureStore functionality is now integrated into ConfigManager.

NEW/JdeScoping.slnx

@@ -13,7 +13,6 @@
   </Folder>
   <Folder Name="/utils/">
     <Project Path="src/Utils/JdeScoping.ConfigManager/JdeScoping.ConfigManager.csproj" />
-    <Project Path="src/Utils/JdeScoping.SecureStoreManager/JdeScoping.SecureStoreManager.csproj" />
   </Folder>
   <Folder Name="/tests/">
     <Project Path="tests/JdeScoping.Api.Tests/JdeScoping.Api.Tests.csproj" />
@@ -28,6 +27,5 @@
     <Project Path="tests/JdeScoping.Host.Tests/JdeScoping.Host.Tests.csproj" />
     <Project Path="tests/JdeScoping.Infrastructure.Tests/JdeScoping.Infrastructure.Tests.csproj" />
     <Project Path="tests/JdeScoping.ConfigManager.Tests/JdeScoping.ConfigManager.Tests.csproj" />
-    <Project Path="tests/JdeScoping.SecureStoreManager.Tests/JdeScoping.SecureStoreManager.Tests.csproj" />
   </Folder>
 </Solution>