feat: Implement API client and token models with hashing and JWT authentication

- Added ApiClientModel and ApiTokenModel for managing API clients and tokens.
- Introduced ConfigurationDefinitionModel and ConfigurationValueModel for configuration management.
- Created CredentialSecretModel for storing credential secrets.
- Developed DeploymentArtifactModel and DeploymentBatchModel for deployment management.
- Enhanced DeploymentTargetModel and DeploymentTemplateSelectionModel to support template revisions.
- Added TemplateRevisionModel and TemplateVersionModel for versioning templates.
- Implemented ApiClientSecretHasher for secure secret hashing.
- Created ApiTokenService for generating and validating JWT tokens.
- Updated QueueJobService to handle deployment requests with artifacts.
- Configured authentication settings in appsettings.json for JWT and Negotiate authentication.

Models/TemplateRevisionModel.cs

@@ -0,0 +1,45 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Microsoft.SelfService.Portal.Core.API.Models
+{
+    public class TemplateRevisionModel : BaseModel
+    {
+        [Column(Order = 1)]
+        public Guid TemplateVersionId { get; set; }
+
+        [Column(Order = 2)]
+        public int RevisionNumber { get; set; }
+
+        [Column(Order = 3)]
+        public string JsonData { get; set; } = "{}";
+
+        [Column(Order = 4)]
+        public string JsonHash { get; set; } = string.Empty;
+
+        [Column(Order = 5)]
+        public string SchemaVersion { get; set; } = "1.0";
+
+        [Column(Order = 6)]
+        public bool IsCurrent { get; set; }
+
+        [Column(Order = 7)]
+        public bool IsPublished { get; set; }
+
+        [Column(Order = 8)]
+        public DateTime? PublishedAt { get; set; }
+
+        [Column(Order = 9)]
+        public string? PublishedBy { get; set; }
+
+        public TemplateVersionModel TemplateVersion { get; set; } = null!;
+        public ICollection<ConfigurationDefinitionModel> ConfigurationDefinitions { get; set; } = new List<ConfigurationDefinitionModel>();
+        public ICollection<DeploymentTemplateSelectionModel> DeploymentTemplateSelections { get; set; } = new List<DeploymentTemplateSelectionModel>();
+        public ICollection<DeploymentModel> Deployments { get; set; } = new List<DeploymentModel>();
+
+        public void SetJsonData(string jsonData)
+        {
+            JsonData = string.IsNullOrWhiteSpace(jsonData) ? "{}" : jsonData;
+            JsonHash = TemplateVersionModel.ComputeSha256(JsonData);
+        }
+    }
+}