Add time_and_date plugin. Use it for timezones and date formats around the bot.

backend/src/migrations/1597109357201-CreateMemberTimezonesTable.ts

@@ -0,0 +1,33 @@
+import { MigrationInterface, QueryRunner } from "typeorm";
+import { Table } from "typeorm/index";
+
+export class CreateMemberTimezonesTable1597109357201 implements MigrationInterface {
+  public async up(queryRunner: QueryRunner): Promise<any> {
+    await queryRunner.createTable(
+      new Table({
+        name: "member_timezones",
+        columns: [
+          {
+            name: "guild_id",
+            type: "bigint",
+            isPrimary: true,
+          },
+          {
+            name: "member_id",
+            type: "bigint",
+            isPrimary: true,
+          },
+          {
+            name: "timezone",
+            type: "varchar",
+            length: "255",
+          },
+        ],
+      }),
+    );
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<any> {
+    await queryRunner.dropTable("member_timezones");
+  }
+}