refactor: Moved shared code into shared folder

Squashed commit of the following:

commit bdcc1abac9753790793e4f239d93050d4ec3f635
Author: Erik Tiekstra <erik.tiekstra@arbetsformedlingen.se>
Date:   Wed Jun 30 12:49:30 2021 +0200

    Moved shared code into shared folder

apps/dafa-web/src/app/shared/models/participant.model.ts

@@ -0,0 +1,56 @@
+import { ParticipantStatus } from '@dafa-enums/participant-status.enum';
+import { Service } from '@dafa-enums/service.enum';
+import { PaginationMeta } from './pagination-meta.model';
+
+export interface Participant {
+  id: string;
+  firstName: string;
+  lastName: string;
+  fullName: string;
+  status: ParticipantStatus;
+  nextStep: string;
+  service: Service;
+  errandNumber: number;
+  startDate: Date;
+  endDate: Date;
+  handleBefore: Date;
+}
+
+export interface ParticipantsApiResponse {
+  data: ParticipantApiResponseData[];
+  meta?: PaginationMeta;
+}
+
+export interface ParticipantApiResponse {
+  data: ParticipantApiResponseData;
+}
+
+export interface ParticipantApiResponseData {
+  id: string;
+  firstName: string;
+  lastName: string;
+  status: ParticipantStatus;
+  nextStep: string;
+  service: Service;
+  errandNumber: number;
+  startDate: Date;
+  endDate: Date;
+  handleBefore: Date;
+}
+
+export function mapParticipantApiResponseToParticipant(data: ParticipantApiResponseData): Participant {
+  const { id, firstName, lastName, status, nextStep, service, errandNumber, startDate, endDate, handleBefore } = data;
+  return {
+    id,
+    firstName,
+    lastName,
+    fullName: `${firstName} ${lastName}`,
+    status,
+    nextStep,
+    service,
+    errandNumber,
+    startDate,
+    endDate,
+    handleBefore,
+  };
+}