Chore: Add initial/experimental xorm spanner driver (#101398)

* make it build and start

* run some migrations

* add build tags, remove log

* remove unused code

* revert go.mod changes

* move initialisation into dialect file

* update workspace

* update workspace once again

* clean up dependencies

* further cleanup

* Address some review feedback.

* Fix go.sum.

---------

Co-authored-by: Peter Štibraný <pstibrany@gmail.com>

pkg/util/xorm/session_insert.go

@@ -7,6 +7,7 @@ package xorm
 import (
 	"errors"
 	"fmt"
+	"math/rand"
 	"reflect"
 	"sort"
 	"strconv"
@@ -345,6 +346,21 @@ func (session *Session) innerInsert(bean any) (int64, error) {
 		return 0, err
 	}
 
+	// XXX: hack to handle autoincrement in spanner
+	if len(table.AutoIncrement) > 0 && session.engine.dialect.DBType() == "spanner" {
+		var found bool
+		for _, col := range colNames {
+			if col == table.AutoIncrement {
+				found = true
+				break
+			}
+		}
+		if !found {
+			colNames = append(colNames, table.AutoIncrement)
+			args = append(args, rand.Int63n(9e15))
+		}
+	}
+
 	exprs := session.statement.exprColumns
 	colPlaces := strings.Repeat("?, ", len(colNames))
 	if exprs.Len() <= 0 && len(colPlaces) > 0 {