First Commit: Implement All Endpoints for the Task

Description: This commit completes the implementation of all the necessary endpoints for email scheduling and updation, deletion, findOne, findAll

.gitignore

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+/node_modules
+.env

.sample.env

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+PORT=3000
+MONGO_URI=mongodb://127.0.0.1/sample
+CLIENT_URL=http://localhost:5000
+
+GMAIL_USERNAME=
+GMAIL_SECURITY_PIN= 

app.js

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+import express from "express"
+import dotenv from "dotenv";
+import helmet from 'helmet';
+dotenv.config();
+import morgan from "morgan";
+import errorHandler from "./src/middlewares/error/errorHandler.js";
+import cors from "./src/middlewares/security/cors.js";
+import connectDatbase from "./src/config/database.js"
+import router from "./src/routes/emailRoutes.js"
+
+const app = express();
+app.use(cors);
+app.use(helmet());
+app.use(express.json());
+app.use(express.urlencoded({ extended: true }));
+
+if (process.env.NODE_ENV === "development") app.use(morgan("dev"));
+
+connectDatbase();
+
+app.use("/api/v1", router);
+
+app.use(errorHandler);
+
+app.use((req, res) => {
+  res.status(404).json({ success: false, status: 404, message: "Not found" });
+});
+
+const port = process.env.PORT || 3000;
+app.listen(port, () => {
+  console.log(`The server connection is now established and running on port ${port}`);
+});