feat: Support GBase8s Database (#2517)

## Background

Currently, XORM does not yet support the [GBase 8s database by Nanda General Data Technology]. GBase 8s is a widely used domestic database in China, commonly adopted by enterprises and government systems as a backend storage solution.

## Summary of This Contribution
	•	Added support for the gbase8s driver
	•	Implemented a basic database dialect: GBase8sDialect

## Usage Instructions

```go
import	_ "gitee.com/GBase8s/go-gci""

engine, err := xorm.NewEngine("gbase8s", "gbase8s://username:pwd@ip:port/dbname?param=xxx")

Co-authored-by: zhangyunfei <zhangyunfei@gbase.cn>
Reviewed-on: https://gitea.com/xorm/xorm/pulls/2517
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: maktub <maktub@noreply.gitea.com>
Co-committed-by: maktub <maktub@noreply.gitea.com>

README.md

@@ -50,6 +50,9 @@ Drivers for Go's sql package which currently support database/sql includes:
 * MsSql
   - [github.com/microsoft/go-mssqldb](https://github.com/microsoft/go-mssqldb)
 
+* GBase8s
+  - [https://gitee.com/GBase8s/go-gci](https://gitee.com/GBase8s/go-gci)
+
 * Oracle
   - [github.com/godror/godror](https://github.com/godror/godror) (experiment)
   - [github.com/mattn/go-oci8](https://github.com/mattn/go-oci8) (experiment)

README_CN.md

@@ -49,6 +49,9 @@ v1.0.0 相对于 v0.8.2 有以下不兼容的变更：
 * MsSql
   - [github.com/microsoft/go-mssqldb](https://github.com/microsoft/go-mssqldb)
 
+* GBase8s
+  - [https://gitee.com/GBase8s/go-gci](https://gitee.com/GBase8s/go-gci)
+
 * Oracle
   - [github.com/godror/godror](https://github.com/godror/godror) (试验性支持)
   - [github.com/mattn/go-oci8](https://github.com/mattn/go-oci8) (试验性支持)

engine.go

@@ -798,6 +798,22 @@ func (engine *Engine) dumpTables(ctx context.Context, tables []*schemas.Table, w
 								return err
 							}
 						}
+					} else if sess.engine.dialect.URI().DBType == schemas.GBASE8S {
+						stp.Name = strings.Replace(stp.Name, "SQLT_", "", 1)
+						if stp.IsTime() && len(s.String) == 20 { // "2025-06-10T07:55:31Z"
+							t, err := time.Parse(time.RFC3339, s.String)
+							if err != nil {
+								return fmt.Errorf("failed to parse time %s: %v", s.String, err)
+							}
+							r := t.Format("2006-01-02 15:04:05")
+							if _, err = io.WriteString(w, "'"+r+"'"); err != nil {
+								return err
+							}
+						} else {
+							if _, err = io.WriteString(w, "'"+strings.ReplaceAll(s.String, "'", "''")+"'"); err != nil {
+								return err
+							}
+						}
 					} else {
 						if _, err = io.WriteString(w, "'"+strings.ReplaceAll(s.String, "'", "''")+"'"); err != nil {
 							return err

schemas/type.go

@@ -23,6 +23,7 @@ const (
 	MSSQL    DBType = "mssql"
 	ORACLE   DBType = "oracle"
 	DAMENG   DBType = "dameng"
+	GBASE8S  DBType = "gbase8s"
 )
 
 // SQLType represents SQL types

sync.go

@@ -196,6 +196,7 @@ func (session *Session) SyncWithOptions(opts SyncOptions, beans ...interface{})
 				}
 			} else if col.Comment != oriCol.Comment {
 				if engine.dialect.URI().DBType == schemas.POSTGRES ||
+					engine.dialect.URI().DBType == schemas.GBASE8S ||
 					engine.dialect.URI().DBType == schemas.MYSQL {
 					_, err = session.exec(engine.dialect.ModifyColumnSQL(tbNameWithSchema, col))
 				}