Initializes Strava API integration

Sets up the basic structure for integrating with the Strava API.
This includes:
- Adds .devcontainer configuration for consistent development environment.
- Configures eslint and prettier for code quality and formatting.
- Implements secure credential management using Infisical.
- Creates basic Strava client and request classes with authentication handling.
- Sets up basic express routes to return data from the Strava API

This commit lays the foundation for future enhancements such as
fetching and displaying activity data.

src/index.ts

@@ -0,0 +1,38 @@
+import express from 'express';
+import StravaClient from './clients/strava/StravaClient';
+import { Effect } from 'effect'
+/**
+ * Strava API
+ * Main entry point for the application
+ */
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+app.use(express.json());
+
+const stravaClientEffect = StravaClient.create();
+const stravaClient = Effect.runPromise(stravaClientEffect);
+// Basic routes
+app.get('/', (req: express.Request, res: express.Response) => {
+    console.log(req)
+    res.json({ message: 'Strava API' });
+});
+
+app.get('/health', (req: express.Request, res: express.Response) => {
+    console.log(req);
+    res.json({ status: 'ok' });
+});
+
+app.get('/athlete', async (req: express.Request, res: express.Response) => {
+    console.log(req.baseUrl);
+    const client = await stravaClient;
+    const athlete = await Effect.runPromise(client.getAthlete());
+    res.json(athlete);
+});
+
+app.listen(PORT, () => {
+    console.log(`Server running on port ${PORT}`);
+});
+
+export default app;