refactor: do not include test controller in production builds (#402)

Co-authored-by: Elias Schneider <login@eliasschneider.com>

backend/internal/controller/e2etest_controller.go

@@ -0,0 +1,47 @@
+//go:build e2etest
+
+package controller
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+
+	"github.com/pocket-id/pocket-id/backend/internal/service"
+)
+
+func NewTestController(group *gin.RouterGroup, testService *service.TestService) {
+	testController := &TestController{TestService: testService}
+
+	group.POST("/test/reset", testController.resetAndSeedHandler)
+}
+
+type TestController struct {
+	TestService *service.TestService
+}
+
+func (tc *TestController) resetAndSeedHandler(c *gin.Context) {
+	if err := tc.TestService.ResetDatabase(); err != nil {
+		_ = c.Error(err)
+		return
+	}
+
+	if err := tc.TestService.ResetApplicationImages(); err != nil {
+		_ = c.Error(err)
+		return
+	}
+
+	if err := tc.TestService.SeedDatabase(); err != nil {
+		_ = c.Error(err)
+		return
+	}
+
+	if err := tc.TestService.ResetAppConfig(); err != nil {
+		_ = c.Error(err)
+		return
+	}
+
+	tc.TestService.SetJWTKeys()
+
+	c.Status(http.StatusNoContent)
+}