feat: Add new handlers and repository for oauth2

backend/internal/handlers/auth_handlers.go

@@ -0,0 +1,27 @@
+package handlers
+
+import (
+	"gitea.d3m0k1d.ru/d3m0k1d/d3m0k1d.ru/backend/internal/repositories"
+
+	"github.com/gin-gonic/gin"
+)
+
+type AuthHandlers struct {
+	repo repositories.AuthRepository
+}
+
+func NewAuthHandlers(repo repositories.AuthRepository) *AuthHandlers {
+	return &AuthHandlers{repo: repo}
+}
+
+// Callback godoc
+// @Summary Callback for oauth2 providers
+// @Description Callback for oauth2 providers
+// @Tags auth
+// @Accept  json
+// @Produce  json
+// @Success 200 {object} map[string]string
+// @Router /callback [get]
+func (h *AuthHandlers) Callback(c *gin.Context) {
+
+}