Added Runnergroup abstract class

ref #11

src/models/RunnerGroup.ts

@@ -0,0 +1,38 @@
+import { Entity, PrimaryGeneratedColumn, Column } from "typeorm";
+import {
+  IsEmail,
+  IsInt,
+  IsNotEmpty,
+  IsOptional,
+  IsPhoneNumber,
+  IsString,
+} from "class-validator";
+
+/**
+ * Defines the runnerGroup interface.
+*/
+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 participant's middle name.
+   * Optional
+   */
+  @Column()
+  @IsOptional()
+  contact?: GroupContact;
+}