Moved to a "cleaner" directory structure

ref #11

src/models/entities/Permission.ts

@@ -0,0 +1,50 @@
+import { PrimaryGeneratedColumn, Column, OneToMany, Entity, ManyToOne } from "typeorm";
+import {
+  IsInt,
+  IsNotEmpty,
+  IsOptional,
+  IsString,
+} from "class-validator";
+import { User } from './User';
+import { UserGroup } from './UserGroup';
+/**
+ * Defines the Permission interface.
+*/
+@Entity()
+export abstract class Permission {
+  /**
+   * Autogenerated unique id (primary key).
+   */
+  @PrimaryGeneratedColumn()
+  @IsOptional()
+  @IsInt()
+  id: number;
+
+  /**
+   * users
+   */
+  @OneToMany(() => User, user => user.permissions, { nullable: true })
+  users: User[]
+
+  /**
+   * groups
+   */
+  @OneToMany(() => UserGroup, group => group.permissions, { nullable: true })
+  groups: UserGroup[]
+
+  /**
+   * The target
+   */
+  @Column()
+  @IsNotEmpty()
+  @IsString()
+  target: string;
+
+  /**
+   * The action type
+   */
+  @Column()
+  @IsNotEmpty()
+  @IsString()
+  action: string;
+}