Implemented a registration key for organisations

ref #112

src/models/entities/RunnerOrganisation.ts

@@ -1,4 +1,4 @@
-import { IsInt, IsOptional } from "class-validator";
+import { IsInt, IsOptional, IsString } from "class-validator";
 import { ChildEntity, Column, OneToMany } from "typeorm";
 import { ResponseRunnerOrganisation } from '../responses/ResponseRunnerOrganisation';
 import { Address } from './Address';
@@ -27,6 +27,16 @@ export class RunnerOrganisation extends RunnerGroup {
   @OneToMany(() => RunnerTeam, team => team.parentGroup, { nullable: true })
   teams: RunnerTeam[];
 
+  /**
+   * The organisation's api key for self-service registration.
+   * The api key can be used for the /runners/register/:token endpoint.
+   * Is has to be base64 encoded if used via the api (to keep url-safety).
+   */
+  @Column({ nullable: true })
+  @IsString()
+  @IsOptional()
+  key?: string;
+
   /**
    * Returns all runners associated with this organisation (directly or indirectly via teams).
    */