feat(db): 添加对达梦数据库的支持

- 在应用程序中新增对达梦数据库（DM）的配置和连接支持
- 实现 SetDmDB 函数以配置达梦数据库连接
- 更新数据库操作逻辑，支持达梦特有的 SQL 语法和功能
- 在相关文件中添加达梦数据库的处理逻辑，包括表创建、数据插入和查询
- 更新 go.mod 和 go.sum 文件以引入达梦数据库驱动
- 增强文档，详细说明达梦数据库的配置和使用方法

vendor/golang.org/x/text/internal/number/common.go

@@ -0,0 +1,55 @@
+// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
+
+package number
+
+import (
+	"unicode/utf8"
+
+	"golang.org/x/text/internal/language/compact"
+)
+
+// A system identifies a CLDR numbering system.
+type system byte
+
+type systemData struct {
+	id        system
+	digitSize byte              // number of UTF-8 bytes per digit
+	zero      [utf8.UTFMax]byte // UTF-8 sequence of zero digit.
+}
+
+// A SymbolType identifies a symbol of a specific kind.
+type SymbolType int
+
+const (
+	SymDecimal SymbolType = iota
+	SymGroup
+	SymList
+	SymPercentSign
+	SymPlusSign
+	SymMinusSign
+	SymExponential
+	SymSuperscriptingExponent
+	SymPerMille
+	SymInfinity
+	SymNan
+	SymTimeSeparator
+
+	NumSymbolTypes
+)
+
+const hasNonLatnMask = 0x8000
+
+// symOffset is an offset into altSymData if the bit indicated by hasNonLatnMask
+// is not 0 (with this bit masked out), and an offset into symIndex otherwise.
+//
+// TODO: this type can be a byte again if we use an indirection into altsymData
+// and introduce an alt -> offset slice (the length of this will be number of
+// alternatives plus 1). This also allows getting rid of the compactTag field
+// in altSymData. In total this will save about 1K.
+type symOffset uint16
+
+type altSymData struct {
+	compactTag compact.ID
+	symIndex   symOffset
+	system     system
+}