feat: implement Trello integration with OAuth and user fields (#48)

* feat: implement Trello integration with OAuth and user fields

* feat: migrate Trello integration to new integrations table

* refactor: migrate Trello integration to use new integration system

* refactor: migrate Trello integration to use new integrations table

* fix: add loading check for Trello integration and update VSCode settings

* feat: enhance import boards UI with dynamic integration providers and local storage config

* feat: add select/unselect all buttons and loading state to board import form

* feat: add Trello import env vars on README

* docs: update Trello import guide to use OAuth flow instead of API keys

* feat: add integrations table for OAuth token management

* feat: connect trello from import modal

* refactor: consolidate Trello integration endpoints into unified integration router

* fix: trello import again

* refactor: generalize integration authorization flow and improve error handling

* refactor: update Trello API endpoints and tags for better organization

* feat: add Integrations tag to OpenAPI specification

* refactor: update Trello auth endpoint to use generic integration provider param

* refactor: move Trello integration logic from trello.ts to import.ts router

* refactor: consolidate Trello integration endpoints and fix API URL

* chore: remove debug logs

---------

Co-authored-by: Henry <henry_ball@hotmail.co.uk>

packages/db/src/schema/integrations.ts

@@ -0,0 +1,40 @@
+import { relations } from "drizzle-orm";
+import {
+  pgTable,
+  primaryKey,
+  timestamp,
+  uuid,
+  varchar,
+} from "drizzle-orm/pg-core";
+
+import { users } from "./users";
+
+export const integrations = pgTable(
+  "integration",
+  {
+    provider: varchar("provider", { length: 255 }).notNull(),
+    userId: uuid("userId")
+      .notNull()
+      .references(() => users.id, { onDelete: "cascade" }),
+    accessToken: varchar("accessToken", { length: 255 }).notNull(),
+    refreshToken: varchar("refreshToken", { length: 255 }),
+    expiresAt: timestamp("expiresAt").notNull(),
+    createdAt: timestamp("createdAt")
+      .$defaultFn(() => new Date())
+      .notNull(),
+    updatedAt: timestamp("updatedAt").$onUpdateFn(() => new Date()),
+  },
+  (table) => [
+    primaryKey({
+      name: "integration_pkey",
+      columns: [table.userId, table.provider],
+    }),
+  ],
+).enableRLS();
+
+export const integrationsRelations = relations(integrations, ({ one }) => ({
+  user: one(users, {
+    fields: [integrations.userId],
+    references: [users.id],
+  }),
+}));