Refactoring of API

- Add request context to all database calls
- Update deprecated gqlgen functions
- Update go.mod dependencies

api/graphql/resolvers/root.go

@@ -1,6 +1,8 @@
 package resolvers
 
 import (
+	"context"
+
 	api "github.com/photoview/photoview/api/graphql"
 	"gorm.io/gorm"
 )
@@ -8,7 +10,18 @@ import (
 //go:generate go run github.com/99designs/gqlgen
 
 type Resolver struct {
-	Database *gorm.DB
+	database *gorm.DB
+}
+
+func NewRootResolver(db *gorm.DB) Resolver {
+	return Resolver{
+		database: db,
+	}
+}
+
+// DB returns a database instance that is tied to the given context
+func (r *Resolver) DB(ctx context.Context) *gorm.DB {
+	return r.database.WithContext(ctx)
 }
 
 func (r *Resolver) Mutation() api.MutationResolver {