feat: add services package

packages/services/src/Domain/Diagnostics/ServiceDiagnostics.ts

@@ -0,0 +1,17 @@
+type DiagnosticValue =
+  | string
+  | number
+  | Date
+  | boolean
+  | null
+  | undefined
+  | DiagnosticValue[]
+  | { [key: string]: DiagnosticValue }
+
+export type DiagnosticInfo = {
+  [key: string]: Record<string, DiagnosticValue>
+}
+
+export interface ServiceDiagnostics {
+  getDiagnostics(): Promise<DiagnosticInfo | undefined>
+}