feat: Add main application views and structure

- Implemented CreateInstanceView for creating new instances.
- Added HostsView for managing SSH hosts with CRUD operations.
- Created InstancesView for displaying and managing instances.
- Developed LogsView for viewing operation logs.
- Introduced SecretsView for managing secrets associated with hosts.
- Established SettingsView for configuring application settings.
- Created MainWindow as the main application window with navigation.
- Added app manifest and configuration files for logging and settings.

OTSSignsOrchestrator.Core/Models/DTOs/DeploymentResultDto.cs

@@ -0,0 +1,13 @@
+namespace OTSSignsOrchestrator.Core.Models.DTOs;
+
+public class DeploymentResultDto
+{
+    public bool Success { get; set; }
+    public string StackName { get; set; } = string.Empty;
+    public string Message { get; set; } = string.Empty;
+    public string? Output { get; set; }
+    public string? ErrorMessage { get; set; }
+    public int ExitCode { get; set; }
+    public long DurationMs { get; set; }
+    public int ServiceCount { get; set; }
+}