add user management functionality with OTP verification and consent handling, DI introduced

internal/db/database.go

@@ -0,0 +1,24 @@
+package db
+
+import (
+	"context"
+	"strconv"
+
+	"git.logidex.ru/fakz9/logidex-id/internal/config"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+func NewDatabasePool(cfg config.Config) *pgxpool.Pool {
+	ctx := context.Background()
+	connUrl := "postgresql://" + cfg.DB.User + ":" + cfg.DB.Password + "@" + cfg.DB.Host + ":" + strconv.Itoa(cfg.DB.Port) + "/" + cfg.DB.Dbname
+
+	pool, err := pgxpool.New(ctx, connUrl)
+	if err != nil {
+		panic("Failed to connect to database: " + err.Error())
+	}
+	err = pool.Ping(ctx)
+	if err != nil {
+		panic("Failed to ping database: " + err.Error())
+	}
+	return pool
+}