Integrate users and books

- new table userbook linking users and book
- moved rating to users book
- updated demo data and tests
- updated front to hide routes from non connected users

internal/api/dto.go

@@ -3,7 +3,6 @@ package api
 type bookPostCreate struct {
 	Title  string `json:"title" binding:"required,max=300"`
 	Author string `json:"author" binding:"max=100"`
-	Rating int    `json:"rating" binding:"min=0,max=10"`
 }
 
 type userSignup struct {
@@ -15,3 +14,9 @@ type userLogin struct {
 	Username string `json:"username" binding:"required,min=2,max=20"`
 	Password string `json:"password" binding:"required,min=6,max=100"`
 }
+
+type bookUserGet struct {
+	Title  string `json:"title" binding:"required,max=300"`
+	Author string `json:"author" binding:"max=100"`
+	Rating int    `json:"rating" binding:"min=0,max=10"`
+}