Moved to a "cleaner" directory structure

ref #11

src/models/entities/RunnerOrganisation.ts

@@ -0,0 +1,26 @@
+import { Entity, Column, ManyToOne, OneToMany, ChildEntity } from "typeorm";
+import { IsOptional, } from "class-validator";
+import { RunnerGroup } from "./RunnerGroup";
+import { Address } from "./Address";
+import { RunnerTeam } from "./RunnerTeam";
+
+/**
+ * Defines a runner organisation (business or school for example).
+*/
+@ChildEntity()
+export class RunnerOrganisation extends RunnerGroup {
+
+  /**
+   * The organisations's address.
+   * Optional
+   */
+  @IsOptional()
+  @ManyToOne(() => Address, address => address.groups, { nullable: true })
+  address?: Address;
+
+  /**
+ * Used to link teams to runner groups.
+ */
+  @OneToMany(() => RunnerTeam, team => team.parentGroup, { nullable: true })
+  teams: RunnerTeam[];
+}