Add support for pingable roles

src/data/entities/PingableRole.ts

@@ -0,0 +1,15 @@
+import { Entity, Column, PrimaryColumn } from "typeorm";
+import { ISavedMessageData } from "./SavedMessage";
+
+@Entity("pingable_roles")
+export class PingableRole {
+  @Column()
+  @PrimaryColumn()
+  id: number;
+
+  @Column() guild_id: string;
+
+  @Column() channel_id: string;
+
+  @Column() role_id: string;
+}