feature: Schema, Migrations, Core CRUD, and Redis Threshold Cache

VigilCareClinicalAPI/Services/Interfaces/IPatientService.cs

@@ -0,0 +1,7 @@
+public interface IPatientService
+{
+    Task<Patient> RegisterAsync(RegisterPatientRequest req);
+    Task<PagedResult<Patient>> ListAsync(string? q, int page, int pageSize);
+    Task<Patient> GetByIdAsync(Guid id);
+    Task<Encounter> OpenEncounterAsync(Guid patientId, OpenEncounterRequest req);
+}