Install commands, improvements

src/Alma.Abstraction/Services/IOsInformation.cs

@@ -2,6 +2,6 @@ namespace Alma.Services;
 
 public interface IOsInformation
 {
-    string GetOsIdentifier();
-    bool IsOnPlatform(string platform);
+    Task<string> GetOsIdentifierAsync();
+    Task<bool> IsOnPlatformAsync(string platform);
 }

src/Alma.Abstraction/Services/IShellService.cs

@@ -0,0 +1,6 @@
+namespace Alma.Services;
+
+public interface IShellService
+{
+    Task RunCommandAsync(string command);
+}