Adds handler structs and user handler

internal/api/user.go

@@ -0,0 +1,30 @@
+package api
+
+import (
+	"freed/internal/model"
+
+	"github.com/gofiber/fiber/v2"
+)
+
+func (h *Handler) createUser(c *fiber.Ctx) error {
+	user := new(model.User)
+
+	if err := c.BodyParser(user); err != nil {
+		return err
+	}
+
+	result, err := h.db.Exec("INSERT INTO user (first_name, email) VALUES (?, ?)", user.FirstName, user.Email)
+
+	if err != nil {
+		return err
+	}
+
+	id, err := result.LastInsertId()
+
+	if err != nil {
+		return err
+	}
+
+	c.SendStatus(201)
+	return c.JSON(&fiber.Map{"userId": id})
+}