PAPI-4: Added public directory as document root with index.html

public/index.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8">
+        <title>PlutoDev REST API</title>
+    </head>
+    <body>
+        Welcome to the Pluto Development REST API!
+    </body>
+</html>