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/message/doc.go

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+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package message implements formatted I/O for localized strings with functions
+// analogous to the fmt's print functions. It is a drop-in replacement for fmt.
+//
+//
+// Localized Formatting
+//
+// A format string can be localized by replacing any of the print functions of
+// fmt with an equivalent call to a Printer.
+//
+//    p := message.NewPrinter(message.MatchLanguage("en"))
+//    p.Println(123456.78) // Prints 123,456.78
+//
+//    p.Printf("%d ducks in a row", 4331) // Prints 4,331 ducks in a row
+//
+//    p := message.NewPrinter(message.MatchLanguage("nl"))
+//    p.Printf("Hoogte: %.1f meter", 1244.9) // Prints Hoogte: 1,244.9 meter
+//
+//    p := message.NewPrinter(message.MatchLanguage("bn"))
+//    p.Println(123456.78) // Prints ১,২৩,৪৫৬.৭৮
+//
+// Printer currently supports numbers and specialized types for which packages
+// exist in x/text. Other builtin types such as time.Time and slices are
+// planned.
+//
+// Format strings largely have the same meaning as with fmt with the following
+// notable exceptions:
+//   - flag # always resorts to fmt for printing
+//   - verb 'f', 'e', 'g', 'd' use localized formatting unless the '#' flag is
+//     specified.
+//   - verb 'm' inserts a translation of a string argument.
+//
+// See package fmt for more options.
+//
+//
+// Translation
+//
+// The format strings that are passed to Printf, Sprintf, Fprintf, or Errorf
+// are used as keys to look up translations for the specified languages.
+// More on how these need to be specified below.
+//
+// One can use arbitrary keys to distinguish between otherwise ambiguous
+// strings:
+//    p := message.NewPrinter(language.English)
+//    p.Printf("archive(noun)")  // Prints "archive"
+//    p.Printf("archive(verb)")  // Prints "archive"
+//
+//    p := message.NewPrinter(language.German)
+//    p.Printf("archive(noun)")  // Prints "Archiv"
+//    p.Printf("archive(verb)")  // Prints "archivieren"
+//
+// To retain the fallback functionality, use Key:
+//    p.Printf(message.Key("archive(noun)", "archive"))
+//    p.Printf(message.Key("archive(verb)", "archive"))
+//
+//
+// Translation Pipeline
+//
+// Format strings that contain text need to be translated to support different
+// locales. The first step is to extract strings that need to be translated.
+//
+// 1. Install gotext
+//    go get -u golang.org/x/text/cmd/gotext
+//    gotext -help
+//
+// 2. Mark strings in your source to be translated by using message.Printer,
+// instead of the functions of the fmt package.
+//
+// 3. Extract the strings from your source
+//
+//    gotext extract
+//
+// The output will be written to the textdata directory.
+//
+// 4. Send the files for translation
+//
+// It is planned to support multiple formats, but for now one will have to
+// rewrite the JSON output to the desired format.
+//
+// 5. Inject translations into program
+//
+// 6. Repeat from 2
+//
+// Right now this has to be done programmatically with calls to Set or
+// SetString. These functions as well as the methods defined in
+// see also package golang.org/x/text/message/catalog can be used to implement
+// either dynamic or static loading of messages.
+//
+//
+// Plural and Gender Forms
+//
+// Translated messages can vary based on the plural and gender forms of
+// substitution values. In general, it is up to the translators to provide
+// alternative translations for such forms. See the packages in
+// golang.org/x/text/feature and golang.org/x/text/message/catalog for more
+// information.
+//
+package message