Moved to a "cleaner" directory structure

ref #11

src/models/entities/Address.ts

@@ -0,0 +1,87 @@
+import { Entity, PrimaryGeneratedColumn, Column, OneToMany } from "typeorm";
+import {
+  IsInt,
+  IsNotEmpty,
+  IsOptional,
+  IsPostalCode,
+  IsString,
+} from "class-validator";
+import { Participant } from "./Participant";
+import { RunnerOrganisation } from "./RunnerOrganisation";
+
+/**
+ * Defines a address (to be used for contact information).
+*/
+@Entity()
+export class Address {
+  /**
+   * Autogenerated unique id (primary key).
+   */
+  @PrimaryGeneratedColumn()
+  @IsOptional()
+  @IsInt()
+  id: number;
+
+  /**
+   * The address's description.
+   */
+  @Column({nullable: true})
+  @IsString()
+  @IsOptional()
+  description?: string;
+
+  /**
+   * The address's first line.
+   * Containing the street and house number.
+   */
+  @Column()
+  @IsString()
+  @IsNotEmpty()
+  address1: string;
+
+  /**
+   * The address's second line.
+   * Containing optional information.
+   */
+  @Column({nullable: true})
+  @IsString()
+  @IsOptional()
+  address2?: string;
+
+  /**
+   * The address's postal code.
+   */
+  @Column()
+  @IsString()
+  @IsNotEmpty()
+  @IsPostalCode("DE")
+  postalcode: string;
+
+  /**
+   * The address's city.
+   */
+  @Column()
+  @IsString()
+  @IsNotEmpty()
+  city: string;
+
+  /**
+   * The address's country.
+   */
+  @Column()
+  @IsString()
+  @IsNotEmpty()
+  country: string;
+
+  /**
+   * Used to link the address to participants.
+   */
+  @OneToMany(() => Participant, participant => participant.address, { nullable: true })
+  participants: Participant[];
+
+  /**
+   * Used to link the address to runner groups.
+   */
+  @OneToMany(() => RunnerOrganisation, group => group.address, { nullable: true })
+  groups: RunnerOrganisation[];
+}