feat: initialized all controllers for release 1;

feat: authentication added to swagger

backend/internal/controllers/account.go

@@ -0,0 +1,18 @@
+package controllers
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+// @Summary Change account password
+// @Tags Account
+// @Accept json
+// @Produce json
+// @Security JWT
+// @Router /account/changePassword [put]
+func ChangePassword(c *gin.Context) {
+	c.Status(http.StatusNotImplemented)
+}
+