feat(patient): add patient handler and refactor form submission

- Introduce new patient handler using genCrudHandler for CRUD operations
- Refactor patient entry form to use handler for save operations
- Separate form data composition from submission logic
- Handle file uploads and navigation after successful submission

app/handlers/patient.handler.ts

@@ -0,0 +1,24 @@
+// Handlers
+import { genCrudHandler } from '~/handlers/_handler'
+
+// Services
+import { postPatient as create, patchPatient as update, removePatient as remove } from '~/services/patient.service'
+
+export const {
+  recId,
+  recAction,
+  recItem,
+  isReadonly,
+  isProcessing,
+  isFormEntryDialogOpen,
+  isRecordConfirmationOpen,
+  onResetState,
+  handleActionSave,
+  handleActionEdit,
+  handleActionRemove,
+  handleCancelForm,
+} = genCrudHandler({
+  create,
+  update,
+  remove,
+})