Reorganization of backend + new routes

backend/core/models/permissions_to_roles.go

@@ -0,0 +1,16 @@
+package models
+
+import (
+	"github.com/google/uuid"
+	"github.com/uptrace/bun"
+)
+
+type PermissionToRole struct {
+	bun.BaseModel `bun:"table:permissions_to_users"`
+
+	PermissionID int       `bun:"permission_id,pk"`
+	RoleID       uuid.UUID `bun:"type:uuid,pk"`
+
+	Permission *Permission `bun:"rel:belongs-to,join:permission_id=id"`
+	Role       *Role       `bun:"rel:belongs-to,join:role_id=id"`
+}