Moved to a "cleaner" directory structure

ref #11

src/models/entities/RunnerGroup.ts

@@ -0,0 +1,47 @@
+import { PrimaryGeneratedColumn, Column, OneToMany, ManyToOne, Entity, TableInheritance } from "typeorm";
+import {
+  IsInt,
+  IsNotEmpty,
+  IsOptional,
+  IsString,
+} from "class-validator";
+import { GroupContact } from "./GroupContact";
+import { Runner } from "./Runner";
+import { RunnerTeam } from "./RunnerTeam";
+
+/**
+ * Defines the runnerGroup interface.
+*/
+@Entity()
+@TableInheritance({ column: { name: "type", type: "varchar" } })
+export abstract class RunnerGroup {
+  /**
+   * Autogenerated unique id (primary key).
+   */
+  @PrimaryGeneratedColumn()
+  @IsOptional()
+  @IsInt()
+  id: number;
+
+  /**
+   * The group's first name.
+   */
+  @Column()
+  @IsNotEmpty()
+  @IsString()
+  name: string;
+
+  /**
+   * The group's contact.
+   * Optional
+   */
+  @IsOptional()
+  @ManyToOne(() => GroupContact, contact => contact.groups, { nullable: true })
+  contact?: GroupContact;
+
+  /**
+   * Used to link runners to a runner group.
+   */
+  @OneToMany(() => Runner, runner => runner.group, { nullable: true })
+  runners: Runner[];
+}