added service with base function to get course and event attendees

shared/tsconfig.json

@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "target": "ESNext",
+    "module": "ESNext",
+    "moduleResolution": "Bundler",
+    "declaration": true,
+    "emitDeclarationOnly": true,
+    "outDir": "dist",
+    "strict": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "esModuleInterop": true,
+    "isolatedModules": true,
+    "resolveJsonModule": true
+  },
+  "include": ["./**/*.ts"]
+}

shared/types/course.ts

@@ -0,0 +1,49 @@
+export interface Course {
+  id: number;
+  name: string;
+  short_name: string;
+  category: string;
+  description?: string | null;
+  image_url?: string | null;
+  created_at: string;
+  updated_at: string; 
+  deleted?: number | boolean;
+  prereq_id?: number | null;
+}
+
+export interface CourseAttendee {
+  passed: boolean;                // tinyint(1)
+  attendee_id: number;            // PK
+  course_event_id: number;        // PK
+  attendee_role_id: number | null;
+  role: CourseAttendeeRole | null;
+  created_at: string;             // datetime → ISO string
+  updated_at: string;             // datetime → ISO string
+  remarks: string | null;
+}
+
+export interface CourseAttendeeRole {
+  id: number;                  // PK, auto-increment
+  name: string | null;         // varchar(50), unique, nullable
+  description: string | null;  // text
+  created_at: string | null;   // datetime (nullable)
+  updated_at: string | null;   // datetime (nullable)
+  deleted: boolean;            // tinyint(4)
+}
+
+export interface RawAttendeeRow {
+  passed: number;
+  attendee_id: number;
+  course_event_id: number;
+  attendee_role_id: number | null;
+  created_at: string;
+  updated_at: string;
+  remarks: string | null;
+
+  role_id: number | null;
+  role_name: string | null;
+  role_description: string | null;
+  role_deleted: number | null;
+  role_created_at: string | null;
+  role_updated_at: string | null;
+}