POST:/users works

server/db/context.go

@@ -0,0 +1,15 @@
+package db
+
+import (
+	"database/sql"
+	"time"
+)
+
+type TxContext interface {
+	Deadline() (deadline time.Time, ok bool)
+	Done() <-chan struct{}
+	Err() error
+	Value(key any) any
+
+	GetOrCreateTransaction(db *Database) (*sql.Tx, error)
+}