revert InitModuleDB pattern, back to single ModuleDB func

dbx.go

@@ -92,17 +92,8 @@ func SQLO() *sql.DB {
 	return sqlDB
 }
 
-// ModuleDB returns the existing database module, or panics if it has not
-// been initialized yet.
-func ModuleDB() *app.Module {
-	if dbxshared.DBModule == nil {
-		panic("ModuleDB not initialized yet")
-	}
-	return dbxshared.DBModule
-}
-
-// InitModuleDB returns the database module with the provided configuration.
-func InitModuleDB(dialect Dialect, cfg *DBConfig, forceDebugLog bool) *app.Module {
+// ModuleDB returns the database module with the provided configuration.
+func ModuleDB(dialect Dialect, cfg *DBConfig, forceDebugLog bool) *app.Module {
 	if dbxshared.DBModule != nil {
 		panic("ModuleDB initialized multiple times")
 	}

dbxm/mysql.go

@@ -76,7 +76,7 @@ type _mysqlLogger struct{}
 func (_mysqlLogger) InitLogger() {
 	mysql.SetQueryLogger(func(ctx context.Context, queryInfo mysql.QueryInfo) {
 		_, args := queryInfo.Statement.Sql()
-		dbx.ModuleDB().Logger().Debug(
+		dbxshared.DBModule.Logger().Debug(
 			"Executed SQL query",
 			"args", args,
 			"duration", queryInfo.Duration,

dbxp/pxg.go

@@ -76,7 +76,7 @@ type _postgresLogger struct{}
 func (_postgresLogger) InitLogger() {
 	postgres.SetQueryLogger(func(ctx context.Context, queryInfo postgres.QueryInfo) {
 		_, args := queryInfo.Statement.Sql()
-		dbx.ModuleDB().Logger().Debug(
+		dbxshared.DBModule.Logger().Debug(
 			"Executed SQL query",
 			"args", args,
 			"duration", queryInfo.Duration,