Add custom shortcut support

src/models/index.ts

@@ -1,5 +1,7 @@
 import Settings from './settings';
+import Shortcut from './shortcut';
 
 export {
-  Settings
+  Settings,
+  Shortcut
 };

src/models/shortcut.ts

@@ -0,0 +1,23 @@
+import {Table, Column, PrimaryKey, Model, AutoIncrement, Index} from 'sequelize-typescript';
+
+@Table
+export default class Shortcut extends Model<Shortcut> {
+  @PrimaryKey
+  @AutoIncrement
+  @Column
+  id!: number;
+
+  @Column
+  @Index
+  guildId!: string;
+
+  @Column
+  authorId!: string;
+
+  @Column
+  @Index
+  shortcut!: string;
+
+  @Column
+  command!: string;
+}