feat: Initialize frontend and backend structure with essential configurations and entities

backend/cmd/api/main.go

@@ -0,0 +1,16 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func helloHandler(w http.ResponseWriter, r *http.Request) {
+	fmt.Fprintln(w, "Hello from the Time Tracker Backend!")
+}
+
+func main() {
+	http.HandleFunc("/", helloHandler)
+	fmt.Println("Server listening on port 8080")
+	http.ListenAndServe(":8080", nil)
+}